有限温度下的相互作用玻色子系统:格点计算的处理
Interacting Boson System at Finite Temperature: The treatment of the lattice calculations
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中文总结 AI 辅助
该研究在扩展正则系综中采用热力学一致的平均场方法,研究有限温度下带电玻色子的相互作用,通过拟合格点压力,模型成功再现了同位旋密度、能量密度和迹反常,其中phi-6相互作用更精确。
中文摘要 AI 辅助
我们在热力学一致的平均场方法中,研究了有限温度和同位旋密度下相互作用的相对论性带电玻色子,并考虑了排斥性的phi-4和phi-6相互作用。热力学在扩展正则系综中表述,其中守恒的同位旋密度(而非化学势)是独立变量。这在凝聚相中至关重要,因为在该相中mu_I由凝聚固定。通过将一个常数拟合到T=122 MeV处的格点压力,该模型再现了格点同位旋密度、能量密度和迹反常,其中phi-6相互作用更为精确。
英文摘要
We study interacting relativistic charged bosons at finite temperature and isospin density in a thermodynamically consistent mean-field approach with repulsive phi-4 and phi-6 interactions. The thermodynamics is formulated in an Extended Canonical Ensemble, in which the conserved isospin density, not the chemical potential, is the independent variable. This is essential in the condensed phase, where mu_I is fixed by condensation. With one constant fitted to the lattice pressure at T=120 MeV, the model reproduces the lattice isospin density, energy density, and trace anomaly, phi-6 being more accurate.
发表机构
- Bogolyubov Institute for Theoretical Physics(博戈留博夫理论物理研究所)
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