Chuyển pha hình học Lifshitz trong mô hình QCD hiệu quả với không phục hồi đối xứng Chiral

• Ngôn ngữ: vie
• Ký hiệu phân loại: 537.67 Quantum electrodynamics
• Thông tin xuất bản: Communications in Physics, 2013
• Mô tả vật lý: 289-300
• Bộ sưu tập: Metadata
• ID: 506425

Tóm tắt

The topological Lifshitz phase transition is studied systematically within an effective model of QCD, in which the chiral symmetry, broken at zero temperature, is not restored at high temperature and/or baryon chemical potential. It is found that during phase transitwn the quark system undergoes a first-order transition from low density fully-gapped state to high density state with Fermi sphere which is protected by momentum-space topology. The Lifshitz phase diagram in the plane of temperature and baryon chemical potential is established. The crttical behaviors of various equations of state are determined.