Thermodynamic properties of spontaneous magnetization in three-dimensional Chern-Simons QED

Journal Article · Tue Jul 01 04:00:00 EDT 1997 · Physical Review, D

DOI:https://doi.org/10.1103/PhysRevD.56.1021· OSTI ID:527082

Kanemura, S ^[1]; Matsushita, T ^[2]

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1. Theory Group, KEK, Tsukuba, Ibaraki 305 (Japan)
2. Department of Physics, Osaka University, Toyonaka, Osaka 560 (Japan)

The spontaneous magnetization in (2+1)-dimensional Chern-Simons QED is discussed in a finite temperature system. The thermodynamical potential is analyzed within the weak field approximation and in the fermion massless limit. We find that there is a linear term with respect to the magnetic field with a negative coefficient at any finite temperature. This implies that the spontaneous magnetic field does not vanish even at high temperature. In addition, we examine the photon mass spectrum in the system. We find that the bare Chern-Simons coefficient is canceled by the radiative effects. The photons then become topologically massless according to the magnetization, though they are massive by finite temperature effects. Thus the magnetic field is a long-range force without screening, even at high temperature. {copyright} {ital 1997} {ital The American Physical Society}

• OSTI ID: 527082
• Journal Information: Physical Review, D, Journal Name: Physical Review, D Journal Issue: 2 Vol. 56; ISSN PRVDAQ; ISSN 0556-2821
• Country of Publication: United States
• Language: English

Related Subjects

66 PHYSICS
FERMIONS
MAGNETIC FIELDS
MAGNETIZATION
MASSLESS PARTICLES
PHOTONS
POTENTIALS
QUANTUM ELECTRODYNAMICS
SCREENING
TEMPERATURE DEPENDENCE
THERMODYNAMIC PROPERTIES
THREE-DIMENSIONAL CALCULATIONS
TOPOLOGY