marcel grossmann meeting on recent developments in ...xliii metric fluctuations in semiclassical...

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PARTB THE EIGHTH MARCEL GROSSMANN MEETING On Recent Developments in Theoretical and Experimental General Relativity, Gravitation, and Relativistic Field Theories Proceedings of the Meeting held at The Hebrew University of Jerusalem 22-27 June 1997 Editor Tsvi Piran The Racah Institute for Physics The Hebrew University of Jerusalem Jerusalem 91904 Israel Series Editor Remo Ruffini International Center for Relativistic Astrophysics University of Rome "La Sapienza" Rome 00185 Italy UNIVERSITATSSIBLIOTHEK HANNOVER TECHNISCHE INFORMATIONSBIBLIOTHEK ,.,.,.,/ *> ^ World Scientific Singapore New Jersey * London Hong Kong

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  • PARTB

    THE EIGHTH

    MARCEL GROSSMANN MEETING

    On Recent Developments in Theoretical and ExperimentalGeneral Relativity, Gravitation, and Relativistic Field Theories

    Proceedings of the Meeting held at

    The Hebrew University of Jerusalem

    22-27 June 1997

    Editor

    Tsvi PiranThe Racah Institute for Physics

    The Hebrew University of JerusalemJerusalem 91904 Israel

    Series Editor

    Remo RuffiniInternational Center for Relativistic Astrophysics

    University of Rome "La Sapienza"Rome 00185 Italy

    UNIVERSITATSSIBLIOTHEKHANNOVER

    TECHNISCHE

    INFORMATIONSBIBLIOTHEK,.,.,.,/

    *>^ World ScientificSingapore •NewJersey *London • Hong Kong

  • xliii

    Metric Fluctuations in Semiclassical GravityR. Martin, E. Verdaguer 824

    Energy-Momentum Tensor and Particle Creation in the De Sitter UniverseCarmen Molina-Pari's 827

    Scalar Perturbations in Open Semiclassical FLRW UniverseG. SlEMIENIEC-OZIEBiO, A. WOSCZYNA 830

    Classical Backgrounds with Vanishing Effective LagrangiansL. Sriramkumar, T. Padmanabhan, R. Mukund 833

    An Approach to Quantum Statistical Mechanics on Robertson-Walker

    Space-TimesM. Trucks 836

    Spinning Particles on Curved Spaces and Constants of MotionM. Visinescu 839

    Gravitational Vacuum Polarization

    Matt Visser 842

    PARTB

    Time in Quantum GravityChairperson: G. Horwitz

    Thermodynamics for Gravitating Systems is DifferentG. Horwitz 846

    The Evolution Operator for Quantum Gravity: Signature Change in

    MinisuperspaceA. Carlini, H. Ishihara, K. Nakamura, T. Okamura 862

    Kolmogorov's Algorithmic Complexity and its Probability Interpretation in

    Quantum GravityV.D. Dzhunushaliev 865

    Covariant Introduction of the Planck Length in the Path Integral Formulationof Field TheoryAlessandro Massarotti, Alak Chakravorty 868

    Quantum Reference Frames and Quantum Space-Time

    S.N. Mayburov 871

    Time in Quantum Gravity

    C. Rovelli 874

    Time, Gauge, and the Superposition Principle in Quantum GravitySteven Weinstein 875

  • xliv

    Continuous Consistent Histories and the Tunneling Time Problem

    N. Yamada 878

    Canonical Quantum Gravity

    Chairperson: Hideo Kodama

    Canonical Quantum Gravity Session: Summary ReportHideo Kodama 882

    The Equivalence Between the Connection and the Loop Representation of

    Quantum GravityR. De Pietri 892

    On Generalized Dynamics of Bianchi IX CosmologyS. Gogilidze, A. Khvedelidze, D. Mladenov, V. Pervushin 895

    Canonical Structure of Locally Homogeneous Systems on Compact 3-manifoldsHideo Kodama 898

    CP-Symmetry in Chiral GravityEckehard W. Mielke, Alfredo Macias, Ytjval Ne'eman 901

    Problems of Minisuperspace Canonical QuantizationA.A. Minzoni, Marcos Rosenbaum, Michael P. Ryan, Jr 904

    Constants of the Motion and the Quantum Modular Group in

    (2+l)-Dimensional GravityV. Moncrief, J.E. Nelson 907

    From Reissner-Nordstrom Quantum States to Charged Black Holes Mass

    Evaporation

    P.V. Moniz 911

    The Role of Dilations in Diffeomorphism Covariant Algebraic Quantum Field

    TheoryM. Rainer 914

    Loop Quantum GravityC. Rovelli 917

    Eisenhart's Principle — on the Road to Desingularize Geodesic Motion in

    MinisuperspaceMarek Szydlowski, Marek Beisiada 918

    Hamiltonians for Compact Homogeneous UniversesMasayuki Tanimoto, Tatsuhiko Koike, Akio Hosoya 921

    StringsChairperson: E. Rabinovici

    Type I Vacua in the Web of String DualitiesMassimo Bianchi 925

  • xlv

    2D Induced Gravity from a WZNW SystemM. Blagojevic, D.S. Popovic, B. Sazdovic 928

    Dirac Constraint Quantization of Matter-Coupled 2D Dilaton Gravity ModelsJ. Cruz, J.M. Izquierdo, D.J. Navarro, J. Navarro-Salas 931

    Exact Path Integral Quantization of 2-D Dilaton GravityW. Kummer, H. Liebl, D.V. Vassilevich 936

    Minimum Size from Strings and Quantum CosmologyJose M. Raya, Luis J. Garay, Pedro F. Gonzalez-Diaz, Guillermo A.Mena Marugan 939

    The Casimir Effect

    Chairperson: V. Mostepanko

    Casimir Effect in Schwarzschild GeometryKarsten Bormann 943

    The Casimiro Experiment: Dynamical Detection of Casimir Forces

    G. Bressi, G. Carugno, A. Galvani, R. Onofrio, G. Ruoso 946

    High Sensitivity Measurement of the Casimir Force and Observability of Finite

    Temperature Effects

    R. Cowsik, B.P. Das, N. Krishnan, G. Rajalakshmi, D. Suresh,C.S. Unnikrishnan 949

    Pair of Accelerated Frames: A Perfect Interferometer

    Ulrich H. Gerlach 952

    Is Sonoluminescence Due to Dynamical Casimir Effect?C.S. Unnikrishnan 955

    Black Hole Thermodynamics

    Chairperson: T. Jacobson

    Black Hole Thermodynamics Today

    T. Jacobson 959

    Constraints on the Geometries of Black Holes in Classical and Semiclassical

    GravityPaul R. Anderson, Courtney D. Mull 968

    Rindler Space EntropyJ.R. Arenas, J.M. Tejeiro 971

    Black Holes of Constant Curvature

    Maximo Banados 974

    The 'Ups' and 'Downs' of a Spinning Black Hole

    CM. Chambers, W.A. Hiscock, B.E. Taylor 977

  • xlvi

    Thermodynamics of Nonsingular Spherically Symmetric Black Hole

    I. Dymnikova 980

    Black Hole Entropy and Entanglement ThermodynamicsHideo Kodama, Shinji Mukohyama, Masafumi Seriu 983

    Euclidean Instantons and Hawking Radiation

    S. Massar, R. Parentani 986

    Toward the New Gravitational Noncommutative Mechanics and Statistical

    Mechanics of Quantum Black Holes

    P.O. Mazur 989

    Loop Corrections for 2D Hawking Radiation

    A. Mikovic, V. Radovanovi6 992

    Black Hole Entropy from Loop Quantum GravityC. Rovelli 995

    The Black Hole Entropy: A Spacetime Foam ApproachFabio Scardigli 996

    Covariant Path Integrals and Black Holes

    F. Vendrell, M.E. Ortiz 1002

    Quantum CosmologyChairperson: A. Starobinski

    Quantum Analysis of the Compactification Process in the Multidimensional

    Einstein-Yang-Mills SystemO. Bertolami, P.D. Fonseca, P.V. Moniz 1006

    Can Spontaneous Supersymmetry Breaking in a Quantum Universe Induce the

    Emergence of Classical Spacetimes?O. Bertolami, P.V. Moniz 1009

    The Old Frequency Decomposition Problem in the Light of New QuantizationMethods

    Franz Embacher 1012

    New Results in One-Loop Quantum CosmologyG. Esposito, A.Yu. Kamenshchik 1015

    Complex Inflaton Field in Quantum CosmologyA.Yu. Kamenshchik, I.M. Khalatnikov, A.V. Toporensky 1018

    Quantum Inhomogeneous Mixmaster Model and the Origin of the EarlyUniverse

    A.A. KlRILLOV 1021

    Supersymmetric Quantum Cosmology: The Lorentz ConstraintAlfredo Macias, Eckehard W. Mielke, Jose Socorro 1023

  • xlvii

    Can We Obtain Conserved Currents in Supersymmetric Quantum Cosmology?P.V. Moniz 1026

    Quantum Cosmology in Some Scalar-Tensor TheoriesL.O. Pimentel, C. Mora 1029

    Gravitational Wave Detectors—Bars

    Chairperson: G. Pizzella

    Gravitational Wave Resonant Detectors: Status and PerspectivesG. Pizzella 1033

    Operation of the Gravitational Wave Detector NAUTILUS

    P. Astone et al 1039

    Advances and Perspectives in Capacitive Transducers and Associated ReadoutM. Bassan, Y. Minenkov, V. Fafone, P. Bonifazi, M. Visco, P. Carelli,M,G. Castellano 1042

    Transducer Development for the Allegro Detector

    W.O. Hamilton, W.W. Johnson, E. Mauceli, M. McHugh, A. Morse .... 1045

    Calibration and Filtering of Data from a Resonant Mass Gravitational WaveAntenna

    I.S. Heng, M.E. Tobar, D.G. Blair, E.N. Ivanov 1048

    Sapphire Dielectric Resonant-Mass Transducer for Gravitational Wave Detection

    C.R. Locke, M.E. Tobar, E.N. Ivanov, D.G. Blair 1053

    Gravitational Wave Detectors—Interferometers

    Chairperson: Robert Spero

    Gravitational Waves Detection by Phase Interference

    Y. BEN-ARYEH 1057

    Sapphire Test Masses and Nb Flexure Suspensions to Reduce the Thermal

    Noise in Laser Interferometer Gravitational Wave Detectors

    L. Ju, M. Taniwaki, D.G. Blair, F. Benabid, M. Notcutt 1060

    Design of Suspension System for GEO 600

    M.V. Plissi, K.A. Strain, N.A. Robertson, J. Hough, CI. Torrie,S. Rowan, S. Twyford, S. Killbourn 1063

    Progress on Low-Frequency Active Vibration Isolation

    S.J. Richman, J.A. Giaime, R.T. Stebbins, P.L. Bender, J.E. Faller 1066

    Performance of Vibration Isolation System for TAMA300

    R. Takahashi 1069

    Ultra-Low Frequency Pre-Isolation

    J. WlNTERFLOOD, D.G. BLAIR 1071

  • xlviii

    The Development of an 8m Suspended Power Recycling Interferometer

    C. Zhao, M. Notcutt, L. Ju, D. Blair 1074

    Gravitational Wave Detectors—Sources

    Chairperson: Luc Blanchet

    Gravitational-Wave Sources

    Luc Blanchet 1078

    Space-Based Gravitational Wave Detectors and the Galactic White Dwarf

    Binary BackgroundM. Benacquista 1086

    On the Perturbation of Non-Rotating Compact Objects Excited by Massive

    Sources

    A. Borrelli, V. Ferrari, L. Gualtieri 1089

    Calculating the Cosmic Background of Supernova-Generated Gravitational

    Radiation

    R.R. Burman, D.G. Blair, S.J. Woodings 1092

    Searches of Inspiraling Compact Binaries with Interferometric Detectors

    Serge Droz, Eric Poisson 1095

    Radiation Backreaction in Spinning Binaries

    Laszlo A, Gergely, Zoltan Perjes, Matyas Vasuth 1098

    Cylindrical Collapse and the Gravitational Radiation from van Stockum

    Space-Time Objects

    Reuven Opher, Erella Opher 1101

    Black Hole Perturbation Approach to Gravitational Radiation from InspirallingBinaries

    Misao Sasaki 1104

    Radiation Reaction in Free Fall from Perturbative Geodesic Equations in

    Spherical CoordinatesAlessandro D.A.M. Spallicci 1107

    Spinning Particle around Black Hole and Gravitational WaveShingo Suzuki, Kei-ichi Maeda 1111

    Supernovae as a Strong Source of Gravitational RadiationA.F. Zakharov 1114

    Gravitational Wave Detectors—Future

    Chairperson: M. Fujimoto

    Response of a Spaceborn Gravitational Wave Antenna to Solar OscillationsA.G. Polnarev, G. Giampieri, I.W. Roxburgh, S. Vorontsov,K. Martchenkov 1118

  • xlix

    Observing Coalescing Binaries with Space-Borne Laser InterferometricGravitational Wave Detectors: Angular Resolution and AstrophysicalParameter Measurements

    A. Vecchio, C. Cutler 1121

    General Relativity in Space

    Chairperson: Kenneth Nordtvedt

    General Relativity in Space

    Kenneth Nordtvedt 1125

    Development of the Gravity Probe B PayloadD. Bardas et al 1135

    The Technology Heritage of the Relativity Mission, Gravity Probe B

    Saps Buchman et al 1139

    What Can LLR Provide to Relativity?J. Mullbr, M. Schneider, K. Nordtvedt, D. Vokrouhlicky 1151

    A Robust Squid System for Space Use

    B. Muhlfelder, J.M. Lockhart, M. Luo, T. McGinnis 1154

    The Clock(s)-to-the-Sun Mission: A New Look

    Kenneth Nordtvedt, Robert Vessot 1160

    Testing for Preferred Inertial Frames with Laser Ranging

    David Vokrouhlicky, Kenneth Nordtvedt 1163

    Experimental Tests

    Chairperson: CM. Will

    Session on Experimental Tests

    CM. Will 1167

    SEE Project for Measuring the Gravitational Interaction Parameters

    A.D. Alexeev, K.A. Bronnikov, N.I. Kolosnitsyn, M.Yu. Konstantinov,

    V.N. Melnikov, Alvin J. Sanders 1171

    A New Inverse Square Law Test

    A. Arnsek, A. Cadez 1174

    Influence of the Gravitational Field on the Beam Splitting Process in Atom

    Interferometry

    Ch.J. Borde, C. Lammerzahl 1178

    The TIFR Equivalence Principle Experiment

    R. Cowsik, N. Krishnan, C.S. Unnikrishnan1181

    Local Reference Systems with PPN Parameters

    S.A. Klioner, M. Soffel1184

  • Quantum Tests of Einstein's Equivalence PrincipleC Lammerzahl 1187

    Techniques for a High-Precision Frame-Dragging Measurement Using an

    Unsupported Gyroscope in a Drag-Free SatelliteBenjamin Lange 1190

    Preparation for a Determination of G Using a Cryogenic Torsion Pendulum

    R.D. Newman, M.K. Bantel 1191

    A New Experiment to Measure G by Means of a Beam BalanceF. NOLTING, J. SCHURR, W. KUNDIG 1194

    Search for Axions Using a Superconducting Differential Angular AccelerometerH.J. Paik, E.R. Canavan, M.V. Moody 1197

    Determination of the Gravitational Constant G Using a Fabry-Perot PendulumResonator

    A. SCHUMACHER, H. SCHUTT, H. WALESCH, H. MEYER 1200

    Possibility of Observing the Gravitational Analogue of the Scalar

    Aharanov-Bohm Effect in Atom Interferometers

    C.S. Unnikrishnan 1203

    Equivalence Principle in SpaceChairperson: Y. Jafry

    Tests of the Equivalence Principle in SpaceY. JAFRY 1207

    MiniSTEP SQUID Position Sensor DevelopmentO.H. Clavier, R.H. Torii, D.B. Debra 1213

    The Using Two-Frequency Lasers in the Gravitational ExperimentsV.I. Denisov, N.V. Kravtsov, V.B. Pinchuk 1216

    Test of the Weak Equivalence Principle in Stratospheric Free FallV. Iafolla, E.C. Lorenzini, V. Milyukov 1218

    Separating Out the Radial-Offset Error in a Two-Sphere Equivalence-PrincipleExperiment in a Satellite

    Benjamin Lange 1221

    Suppressing Radial Non-Observability in a Concentric Two-Sphere Equivalence-Principle Experiment by Gravity-Gradient CancellationBenjamin Lange 1224

    The Two-Color Transcollimator, a Precision Position Detector for a SatelliteTwo-Sphere Equivalence-Principle ExperimentBenjamin Lange 1226

    Cosmic Tests for a More Explicit Equivalence PrincipleR.A. Vera 1229

  • li

    High Sensitive SQUID Based Position Detectors for Application in GravitationalExperimentsW. Vodel, H. Koch, S. Nietzsche, J. V. Zameck Gl., R. Neubert,H. Dittus, S. Lochmann, C. Mehls 1232

    Observational CosmologyChairperson: J, Einasto

    Large Scale Structure of the Universe — IntroductionJ. Einasto 1236

    Gravitational Potential Perturbations and Large Scale BiasM. Demianski, A. Doroshkevich 1240

    Has the Universe a Honeycomb Structure?J. Einasto 1243

    Renormalization Group Approach to Einstein Equation in CosmologyOsamu Iguchi, Akio Hosoya, Tatsuhiko Koike 1246

    Testing Relativistic Zel'dovich Approximation in Spherically SymmetricModel

    M. Morita, K. Nakamura, M. Kasai 1249

    On the Power Law Dependence of the Average Density of the Galaxiesin the Universe

    C Sigismondi, S. Filippi, R. Ruffini 1252

    Power Spectra and Large Scale Structure Formation in Mixed Dark MatterModels with a Cosmological ConstantR. Valdarnini, T. Kahniashvili, B. Novosyadlyj 1255

    Large-Scale Mass Power Spectrum from Peculiar Velocities

    I. ZEHAVI 1258

    Inflation

    Chairperson: Misao Sasaki

    Tensor CMB Anisotropy in Open Inflation ModelsMisao Sasaki, Takahiro Tanaka, Yoshihiro Yakushige 1262

    Canonical Perturbations in the One Bubble Universe

    Jaume Garriga, Xavier Montes, Misao Sasaki, Takahiro Tanaka .... 1274

    On Classical Anisotropies in Models of Open InflationJaume Garriga, V.F. Mukhanov 1277

    Second-Order Reconstruction of Inflationary Dynamics Compatible with Recent

    COBE Data

    Eckehard W. Mielke, Alfredo Macias, Alberto Garcia 1280

  • lii

    Cosmological Vacuum in Unified Theories

    V.N. Pervushin, V.I. Smirichinski 1283

    Topological Defects

    Chairperson: R. Dwrrer

    Can a Self-Gravitating Thin Cosmic String Obey the Nambu-Goto Dynamics?

    B. Boisseau, C. Charmousis, B. Linet 1287

    Current-Carrying Cosmic String Loops Leading to Vortons

    Alejandro Gangui, Edgard Gunzig 1290

    On the Formation of Hierarchical Astronomical Objects in the Cosmic String

    Scheme

    Tetsuya Hara, Sigeru Miyoshi, Petri Mahonen 1293

    On the Perturbation of Domain Wall Coupled to Gravitational Waves

    Akihiro Ishibashi, Hideki Ishihara 1296

    Formation Probability of Non-Topological Electroweak Strings

    M. Nagasawa, J. Yokoyama 1299

    Cylindrical Domain Walls and Gravitational Waves -- Einstein Rosen Wave

    Emission from Momentarily Static Initial ConfigurationKouji Nakamura, Hideki Ishihara 1302

    Testing Theoretical Predictions of CMB Anisotropies Induced by Scaling Seeds

    Against Current Observational Data

    M. Sakellariadou, R. Durrer, M. Kunz, C. Lineweaver 1305

    Numerical Experiments in Cosmic String Networks in Terms of a Three-Scale

    Model

    M. Sakellariadou, M. Hindmarsh, G.R. Vincent 1308

    Topology of the Universe and Topological Defects

    Jean-Philippe Uzan 1311

    Early Universe

    Chairperson: N. Deruelle

    FRW-Geometry Evolution due to Quantum Effects

    Frank Antonsen, Karsten Bormann 1315

    Exact Solutions and Growth of Cosmological Perturbations in the TransitionEra from the Radiation to Matter Dominance

    Andres Aragoneses, Vicenq Mendez, Diego Pav6n,WlNFRIED ZlMDAHL 1318

    Higher Derivative Theory with ViscosityA. Beesham, B.C. Paul, S. Mukherjee 1321

  • Baryogenesis Motivated on String CPT Violation0. Bertolami 1324

    Zero Energy Modes of Massless Fermions in S3 x R SpacetimeM.A. Dariescu, C. Dariescu 1327

    Self-Consistent Solutions for Low-Frequency Gravitational BackgroundRadiation

    G. Dautcourt 1330

    Cosmological Structures in Generalized GravityJ. Hwang 1333

    Bubble Dynamics at Finite Temperature

    Chul H. Lee 1336

    Energy in the Primordial Plasma

    Merav Opher, Reuven Opher 1339

    The Cosmic Fluid is Essentially Transparent to Gravitational Radiation

    Diego Pavon, Vicenc Mendez, Jose M. Salim 1342

    Origin of Structure in a Supersymmetric Quantum UniverseP. Vargas Moniz 1345

    Energy Conditions and Galaxy Formation

    Matt Visser 1348

    Cosmological Perturbations and Large-Scale Conservation Quantities

    W. ZlMDAHL 1351

    Cosmic Microwave BackgroundChairperson: Naoshi Sugiyama

    A Quick View of the CMB Session and Thermal History k CMB AnisotropiesNaoshi Sugiyama 1355

    The Signature of the Negative Curvature of the Universe in CMB MapsV.G. Gurzadyan, S. Torres 1367

    Recent Results of the Tenerife CMB Experiments

    G.M. Gutierrez, R. Rebolo, R.J. Hoyland, R.D. Davies, R.A. Watson,A.N. Lasenby, A.W. Jones, S. Hancock 1370

    CMB Anisotropics Caused By Gravitational Waves: A Parameter Study

    T. Kahniashvili, R. Durrer 1373

    Can the CMBR Dipole be Cosmological?David Langlois 1376

    On Ergodic Perturbations in the Open Universe

    A. Woszczyna 1379

  • liv

    Nonsingular Cosmology

    Chairperson: Mario Novello

    The Program of the Eternal Universe

    Mario Novello 1383

    The Causal Interpretation of Dust and Radiation Fluids Non-Singular Quantum

    Cosmologies

    J. Acacio de Barros, M.A. Sagioro Leal, M. Pinto-Neto 1403

    Inflationary Cosmology in Weyl Integrable Geometry

    J.C. Fabris, J.M. Salim, S.L. Sautu 1406

    Globally Hyperbolic Geodesically Complete Cosmological Model

    Leonardo FernAndez Jambrina 1409

    Relativistic Cosmological HydrodynamicsJ. Hwang, H. Noh 1412

    An Alternative Perspective in Quantum Mechanics and General Relativity

    B.G. Sidharth'

    1415

    Fluctuational Cosmology

    B.G. Sidharth 1418

    Dark Matter

    Chairperson: R. Cowsik

    Dark Matter — An Introduction

    R. Cowsik 1422

    Baryonic Dark Matter

    Francesco de Paolis, Philippe Jetzer, Gabriele Ingrosso,Marco Roncadelli 1426

    Microlensing Implications for Halo Dark Matter

    Francesco de Paolis, Philippe Jetzer, Gabriele Ingrosso,Marco Roncadelli 1429

    Landau Damping of Fermion Perturbations in an Expanding UniverseS. Filippi, C. Sigismondi, L.A. Sanchez 1432

    Some Geometrical Models the Possible Class of Particles Able to Travel Faster

    than LightM.Yu. Konstantinov 1435

    Evolution of Power Spectrum for Inos

    H.W. Lee 1438

    Accelerator Test of the Dark Matter Neutrino Hypothesis

    Hjsakazu Minakata 1441

  • Iv

    The Oscillating G Model: A Possible Explanation for the Apparent Periodicityin the Galaxy Distribution and for the Cosmological Non-Baryonic Matter

    Hernando Quevedo, Marcelo Salgado, Daniel Sudarsky 1444

    Boson Halo: Scalar Field Model for Dark Halos of Galaxies

    Franz E. Schunck 1447

    Experimental Evidence of a New Type of Quantized Matter with Quanta as

    Integer Multiples of the Planck Mass

    Klaus Volkamer, Christoph Streicher 1450

    A Theory of Superluminal Particles with Real Mass Content in Agreementwith Experimental Evidence of a New Type of Quantized MatterKlaus Volkamer, Christoph Streicher 1454

    Microlensing by Noncompact ObjectsA.F. Zakharov, M.V. Sazhin 1458

    Astro-particlesChairperson: A. Dar

    Primordial Nucleosynthesis with Neutrino Degeneracy and Gravitational

    Constant Variation

    Hyun Kyu Lee 1462

    The Search for Antimatter in the Universe

    Aldo Morselli 1465

    Neutrino Transport in Type II Supernovae Boltzmann Solver vs. Monte Carlo

    Method

    Shoichi Yamada, Han-Thomas Janka, Hideyuki Suzuki 1468

    Gravitational Lenses

    Chairperson: A.O. Petters

    Some Global Results on Gravitational Lensing

    A.O. Petters 1472

    Defocusing MicrolensingS. Capozziello, R. de Ritis, V.I. Man'ko, A.A. Marino, G. Marmo,

    A. Simoni 1485

    The Fermat Principle in General Relativity and the Gravitational Lensing

    Effect

    Fabio Giannoni, Antonio Masiello, Paolo Piccione 1488

    On the Classification of Stable Caustics

    W. Hasse, V. Perlick, M. Kriele 1491

  • Ivi

    Properties of Point Mass Lenses on a Regular Polygon and the Problem of

    Maximum Number of ImagesS. Mao, A.O. Petters, H.J. Witt 1494

    Counting Formulas and Bounds on Number of Fixed Points Due to Point

    Mass Lenses

    A.O. Petters, F.J. Wicklin 1497

    Gravitational Lens Equation Near CuspsA.F. Zakharov 1500

    Extragalactic Sources

    Chairperson: A. Treves

    Overwhelming Evidence for a Massive Black Hole in a Nearby Galaxy from

    Maser Emission Observations

    EyalMaoz 1504

    Astrophysical Black Holes

    Chairperson: M. Abramowicz

    Some Effects due to Interaction of Charged Particles and Charged RotatingBlack Holes

    Z. Stuchlik 1508

    QPO's

    Chairperson: L. Stella

    Lense-Thirring Precession and QPOs in Low Mass X-Ray BinariesL. Stella, M. Vietri 1512

    General Relativity and Quasi-Periodic Oscillations

    Philip Kaaret 1516

    Binary Neutron Stars

    Chairperson: Takashi Nakamura

    Report of the Workshop on Binary Neutron Stars/Black HolesTakashi Nakamura 1520

    Dynamics of Relativistic Superfluid in Neutron StarsDavid Langlois 1524

    Relativistic Studies of Close Neutron Star Binaries

    G.J. Mathews, P. Marronetti, J.R. Wilson 1527

    Gravitational Waves from Coalescing Black Hole MACHO BinariesTakashi Nakamura, Misao Sasaki, Takahiro Tanaka Kip S. Thornk . . . 1530

  • Ivii

    May an Eclipsing Binary Radiopulsar Be a Strong-Field GravitationalLaboratory?Igor I. Salukvadze 1533

    Location of the Innermost Stable Circular Orbit of Binary Neutron Stars in the

    First Post Newtonian Approximation

    Masaru Shibata 1536

    Relativistic Equations of Motion for Binary Systems with Monopole, Spin andComplete Quadrupole MomentsC. Xu, Y. He, X. Wu 1539

    Microlenses

    Chairperson: Philippe Jetzer

    Gravitational Microlensing ResearchPhilippe Jetzer 1543

    Microlensing Results and the Galactic Models

    Francesco de Paolis, Philippe Jetzer, Gabriele Ingrosso 1561

    MACHO versus HST: How Bright Can Dark Matter Be?E.J. Kerins 1564

    Noncompact Astronomical Bodies as Microlenses

    A.F. Zakharov, M.V. Sazhin 1567

    Gamma Ray Bursts

    Chairperson: David L. Band

    The Gamma-Ray Burst MysteryDavid L. Band 1571

    Can Internal Shocks Produce the Variability in GRBs?

    Shiho Kobayashi, Tsvi Piran, Re'em Sari 1591

    Gamma-Ray Bursts from Neutron Star BinariesG.J. Mathews, J.R. Wilson, J. Salmonson 1594

    A Unified Model for Gamma Ray Bursters, Galactic Microquasars and

    Ultrahigh Energy Cosmic RaysErella Opher, Reuven Opher 1597

    Spectral Implications of Variability in GRB Fireballs

    Ravi P. Pilla, Abraham Loeb 1600

    Numerical Simulations of Colliding Neutron Stars

    M. Ruffert, H.-Th. Janka 1603

  • Iviii

    Boson Stars

    Chairperson: Eckehard W. Mielke

    Boson Stars: Early History and Recent ProspectsEckehard W. Mielke, Franz E. Schunck 1607

    Localized Mass and Spin in 2+1 Dimensional Topologically Massive GravityA. Edery, M.B. Paranjape 1627

    On the Stability of Real Scalar Boson Stars

    Philippe Jetzer, David Scialom 1630

    Differentially Rotating Boson Stars

    Franz E. Schunck, Eckehard W. Mielke 1633

    List of Participants 1636

    Author Index 1646