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Dispersion Relations in Ultradegenerate Relativistic Plasmas
The propagation of excitation modes in a relativistic ultradegenerate plasma is modified by their interactions with the medium. These modifications can be computed by evaluating their on-shell self-energy, which gives (gauge-independent) dispersion relations. For modes with momentum close to the Fer...
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Lenguaje: | eng |
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2000
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Acceso en línea: | https://dx.doi.org/10.1103/PhysRevD.62.076009 http://cds.cern.ch/record/436738 |
_version_ | 1780895450093584384 |
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author | Manuel, Cristina |
author_facet | Manuel, Cristina |
author_sort | Manuel, Cristina |
collection | CERN |
description | The propagation of excitation modes in a relativistic ultradegenerate plasma is modified by their interactions with the medium. These modifications can be computed by evaluating their on-shell self-energy, which gives (gauge-independent) dispersion relations. For modes with momentum close to the Fermi momentum, the one-loop fermion self-energy is dominated by a diagram with a soft photon in the loop. We find the one-loop dispersion relations for quasiparticles and antiquasiparticles, which behave differently as a consequence of their very different phase-space restrictions when they scatter with the electrons of the Fermi sea. In a relativistic system, the unscreened magnetic interactions spoil the normal Fermi liquid behavior of the plasma. For small values of the Fermi velocity, we recover the non-relativistic dispersion relations of condensed matter systems. |
id | cern-436738 |
institution | Organización Europea para la Investigación Nuclear |
language | eng |
publishDate | 2000 |
record_format | invenio |
spelling | cern-4367382023-03-14T17:02:43Zdoi:10.1103/PhysRevD.62.076009http://cds.cern.ch/record/436738engManuel, CristinaDispersion Relations in Ultradegenerate Relativistic PlasmasParticle Physics - PhenomenologyThe propagation of excitation modes in a relativistic ultradegenerate plasma is modified by their interactions with the medium. These modifications can be computed by evaluating their on-shell self-energy, which gives (gauge-independent) dispersion relations. For modes with momentum close to the Fermi momentum, the one-loop fermion self-energy is dominated by a diagram with a soft photon in the loop. We find the one-loop dispersion relations for quasiparticles and antiquasiparticles, which behave differently as a consequence of their very different phase-space restrictions when they scatter with the electrons of the Fermi sea. In a relativistic system, the unscreened magnetic interactions spoil the normal Fermi liquid behavior of the plasma. For small values of the Fermi velocity, we recover the non-relativistic dispersion relations of condensed matter systems.The propagation of excitation modes in a relativistic ultradegenerate plasma is modified by their interactions with the medium. These modifications can be computed by evaluating their on-shell self-energy, which gives (gauge-independent) dispersion relations. For modes with momentum close to the Fermi momentum, the one-loop fermion self-energy is dominated by a diagram with a soft photon in the loop. We find the one-loop dispersion relations for quasiparticles and antiquasiparticles, which behave differently as a consequence of their very different phase-space restrictions when they scatter with the electrons of the Fermi sea. In a relativistic system, the unscreened magnetic interactions spoil the normal Fermi liquid behavior of the plasma. For small values of the Fermi velocity, we recover the non-relativistic dispersion relations of condensed matter systems.hep-ph/0005040CERN-TH-2000-132CERN-TH-2000-132oai:cds.cern.ch:4367382000-05-04 |
spellingShingle | Particle Physics - Phenomenology Manuel, Cristina Dispersion Relations in Ultradegenerate Relativistic Plasmas |
title | Dispersion Relations in Ultradegenerate Relativistic Plasmas |
title_full | Dispersion Relations in Ultradegenerate Relativistic Plasmas |
title_fullStr | Dispersion Relations in Ultradegenerate Relativistic Plasmas |
title_full_unstemmed | Dispersion Relations in Ultradegenerate Relativistic Plasmas |
title_short | Dispersion Relations in Ultradegenerate Relativistic Plasmas |
title_sort | dispersion relations in ultradegenerate relativistic plasmas |
topic | Particle Physics - Phenomenology |
url | https://dx.doi.org/10.1103/PhysRevD.62.076009 http://cds.cern.ch/record/436738 |
work_keys_str_mv | AT manuelcristina dispersionrelationsinultradegeneraterelativisticplasmas |