plan of the talk 1)turbulence in classical and quantum fluids-motivation (3-15)
DESCRIPTION
MATRIX QUANTIZATION OF THE LORENZ STRANGE ATTRACTOR AND THE ONSET OF TURBULENCE IN QUANTUM FLUIDS M. AXENIDES (INP DEMOKRITOS) & E.FLORATOS (PHYSICS DPT UoA) 5 TH AEGEAN HEP SUMMER SCHOOL MILOS ISLAND 21-26/9/2009. PLAN OF THE TALK - PowerPoint PPT PresentationTRANSCRIPT
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MATRIX QUANTIZATIONOF THE LORENZ
STRANGE ATTRACTORAND
THE ONSET OF TURBULENCE IN QUANTUM FLUIDS
M. AXENIDES (INP DEMOKRITOS)&
E.FLORATOS (PHYSICS DPT UoA)
5TH AEGEAN HEP SUMMER SCHOOLMILOS ISLAND 21-26/9/2009
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PLAN OF THE TALK
1)TURBULENCE IN CLASSICAL AND QUANTUM FLUIDS-MOTIVATION (3-15)
2)THE SALTZMAN-LORENZ EQUATIONS FOR CONVECTIVE FLOW (16-17)
3)THE LORENZ STRANGE ATTRACTOR(18-19)
4)NAMBU DISSIPATIVE DYNAMICS (20-23)
5)MATRIX MODEL QUANTIZATION OF THE LORENZ ATTRACTOR (23-26)
6)CONCLUSIONS -OPEN QUESTIONS
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TURBULENCE IN CLASSICAL AND QUANTUM FLUIDS-MOTIVATION
• MOST FLUID FLOWS IN NATURE ARE • TURBULENT (ATMOSPHERE,SEA,RIVERS,• MAGNETOHYDRODYNAMIC PLASMAS IN
IONIZED GASES,STARS,GALAXIES etc• THEY ARE COHERENT STRUCTURES WITH
DIFFUSION OF VORTICITYFROM LARGE DOWN TO THE MICROSCOPIC SCALES OF THE ENERGY DISSIPATION MECHANISMS
• KOLMOGOROV K41,K62 SCALING LAWS• LANDU-LIFSHITZ BOOK,1987• HOLMES-LUMLEY BERKOOZ 1996
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TURBULENCE IN QUANTUM FLUIDS
AT VERY LOW TEMPERATURES HeIV
VORTICES APPEAR (GROSS-PITAEVSKI)
INTERACT BY SPLIT-JOIN CREATING
MORE VORTICES AND VORTICITY
INTERACTIONS CREATING VISCOUS EFFECTS AND TURBULENCE
KOLMOGOROV SCALING LAWS HOLD FOR
SOME SPECTRA BUT VELOCITY PDF AREN’T GAUSSIAN AND PRESSURE
SPECTRA AREN’T KOLMOGOROV
INTERESTING RECENT ACTIVITY
VERONA MEETING,BARENGHI ‘S TALK 9/2009
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• RECENT INTEREST IN QUARK-GLUON FLUID PLASMA FOUND TO BE
STRONGLY INTERACTING (RHIC EXP) HIRANO-HEINZ et al PLB 636(2006)299,.. ADS/CFT METHODS FROM FIRST PRINCIPLE
CALCULATIONS OF TRANSPORT COEFFICIENTS ,A.STARINETS(THIS CONFERENCE)
OR USING DIRECTLY QUANTUM COLOR HYDRODYNAMIC
EQNS (QCHD) REBHAN,ROMATSCHKE,STRICKLAND
PRL94,102303(2005) THERMALIZATION EFFECTS ARE IN GENERAL NOT
SUFFICIENT TO DESTROY VORTICITY AND MAY BE TURBULENCE SIGNATURES ARE PRESENT COSMOLOGICAL IMPLICATIONS ALREADY CONSIDERED (10^-6 SEC,COSMIC TIME) Astro-phys 09065087,SHILD,GIBSON,NIEUWENHUISEN
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Dynamics of Heavy Ion Collisions
Time scale10fm/c~10-23sec<<10-4(early universe)
Temperature scale 100MeV~1012K
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History of the Universe ~ History of Matter
QGP study
Understandingearly universe
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RAYLEIGH-BENARD CONVECTIONTEMPERATURE GRADIENT ΔΤ
BOUSSINESQUE APPROXIMATION
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3 FOURIER MODES !
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THE SALTZMAN-LORENZ EQUATIONS FOR CONVECTIVE FLOW
• x'[t]=σ (x[t]-y[t]),
• y'[t]=-x[t] z[t]+r x[t]-y[t],
• z'[t]=x[t] y[t]- b z[t]
• 3 Fourier spatial modes of thermal convection for viscous fluid in external temperature gradient ΔΤ
σ=η/ν =Prandl number, η=viscocity,v=thermal diffusivity R=Rc/R ,R Reynolds number =Ratio of Inertial forces to friction forces b=aspect ratio of the liquid container
Standard values σ=10,r=28,b=8/3 E.N.Lorenz MIT,(1963)Saltzman(1962) ONSET OF TURBULENCERUELLE ECKMAN POMEAU…1971,1987..
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THE LORENZ STRANGE ATTRACTOR
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-20
0
20
-20
0
20
0
20
40
-20
0
20
-20
0
20
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Including the dissipative terms(-10 x[t],-y[t],-8/3 z[t])
-10
0
10
20
-20
0
20
0
20
40
-10
0
10
20
-20
0
20
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Lorenz attracting ellipsoid
• E[x,y,z]=r x^2+σ y^2+(z-2r)^2
• d/dt E[x,y,z]=v.∂ E[x,y,z]=
• -2 σ [r x^2+y^2+b (z-r)^2-b r^2]
• <0 Outside the ellipsoid F
• F: r x^2+y^2+b (z-r)^2=b r^2
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Matrix Model Quantization of the Lorenz attractor=Interacting system
of N-Lorenz attractors• X'[t]=σ (X[t]-Y[t]),
• Y'[t]=-1/2(X[t]Z[t]+Z[t]X[t])
• +r X[t]-Y[t],
• Z'[t]=1/2(X[t] Y[t]+Y[t] X[t])- b Z[t]
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X[t],Y[t],Z[t]
NxN Hermitian Matrices
• When X,Y,Z diagonal (real)we have a system of N -decoupled Lorenz Non-linear oscillators
• When the off-diagonal elements are small we have weakly coupled complex oscillators
• When all elements are of the same order of magnitude we have strongly coupled complex
• Ones.
• Special cases X,Y,Z real symmetric
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Matrix Lorenz ellipsoid
• E[X,Y,Z]=Tr[r X^2+σ Y^2+(Z-2r)^2
• d/dt E[X,Y,Z]=• -2 σ Tr[r X^2+Y^2+b (Z-r)^2• -b r^2 I]• <0 Outside the ellipsoid F
• F: Tr[ r X^2+Y^2+b (Z-r)^2]=N b r^2
• Multidimensional attractor
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CONCLUSIONS• Construction of Matrix Lorenz attractor
with U[N] symmetry
• Observables … Tr[X^k Y^l Z^m]
• K,l,m=0,1,2,3,…
• Initial phase of development of Ideas
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Currently
Development of the physical ideas through
• Numerical work
• Analytical work for weak coupling
• 1/N expansion
• Phenomenological applications
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• OPEN QUESTIONS
• EXISTENCE OF MULTIDIMENSIONAL MATRIX LORENZ ATTRACTOR
• HAUSDORFF DIMENSION
• QUANTUM COHERENCE OR QUANTUM DECOHERENCE
• N INTERACTING LORENZ ATTRACTORS
• MATRIX MODEL PICTURE (D0 BRANES
• ARE REPLACED BY LORENZ NONLINEAR SYSTEM)
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PHYSICS APPLICATIONS
• QUARK GLUON PLASMA
• COSMOLOGY
• QUANTUM FLUIDS
• SCALING LAWS OF CORELLATION
• FUNCTIONS