COLLECTIVE BEHAVIOR OF STABLE AND UNSTABLE HOT FERMI SYSTEMS

被引:68
作者
HEISELBERG, H
PETHICK, CJ
RAVENHALL, DG
机构
[1] UNIV ILLINOIS,DEPT PHYS,URBANA,IL 61801
[2] NORDITA,DK-2100 COPENHAGEN,DENMARK
关键词
D O I
10.1006/aphy.1993.1026
中图分类号
O4 [物理学];
学科分类号
0702 ;
摘要
We calculate the density response of an interacting Fermi system at finite temperature from a generalization of Landau′s kinetic equation for quasiparticles. Detailed calculations are made for a form of the interaction function, fpp′, that allows for scalar and vector molecular fields. Collisions between quasiparticles are treated in a relaxation-time approximation. The dispersion relation for sound waves in hot Fermi liquids is derived and analytical formulae are found in the hydrodynamic, collisionless, and low temperature limits. We consider, in addition to cases where the system is stable, situations where the system is unstable with respect to formation of density waves. The general case is solved numerically for a selected set of Landau parameters, relaxation times, and temperatures. © 1993 Academic Press, Inc.
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收藏
页码:37 / 74
页数:38
相关论文
共 33 条
[1]   THERMODYNAMICS, STRUCTURE AND PHASE-STABILITY OF THE NONUNIFORM FLUID STATE [J].
ABRAHAM, FF .
PHYSICS REPORTS-REVIEW SECTION OF PHYSICS LETTERS, 1979, 53 (02) :93-156
[2]   POLARIZATION POTENTIALS AND ELEMENTARY EXCITATIONS IN LIQUID-HE-3 [J].
ALDRICH, CH ;
PINES, D .
JOURNAL OF LOW TEMPERATURE PHYSICS, 1978, 32 (5-6) :689-715
[3]  
BAYM G, 1991, FERMI LIQUID THEORY
[4]  
Baym G, 1978, PHYSICS LIQUID SOLID, V2, P1
[5]   NUCLEAR FRAGMENTATION [J].
BERTSCH, G ;
SIEMENS, PJ .
PHYSICS LETTERS B, 1983, 126 (1-2) :9-12
[6]   A GUIDE TO MICROSCOPIC MODELS FOR INTERMEDIATE ENERGY HEAVY-ION COLLISIONS [J].
BERTSCH, GF ;
DASGUPTA, S .
PHYSICS REPORTS-REVIEW SECTION OF PHYSICS LETTERS, 1988, 160 (04) :189-233
[7]  
BONDORF JP, 1985, NUCL PHYS A, V443, P323
[8]   RELATIVISTIC HYDRODYNAMICS AND HEAVY-ION REACTIONS [J].
CLARE, RB ;
STROTTMAN, D .
PHYSICS REPORTS-REVIEW SECTION OF PHYSICS LETTERS, 1986, 141 (04) :177-280
[9]   TRANSPORT-PROPERTIES OF EXCITED NUCLEAR-MATTER AND THE SHOCK-WAVE PROFILE [J].
DANIELEWICZ, P .
PHYSICS LETTERS B, 1984, 146 (3-4) :168-175
[10]   STATISTICAL SIMULATION OF COMPLETE EVENTS IN ENERGETIC NUCLEAR COLLISIONS [J].
FAI, G ;
RANDRUP, J .
NUCLEAR PHYSICS A, 1983, 404 (03) :551-577