Non-relativistic trace anomaly and equation of state in dense fermionic matter

Autor:	Tajima, Hiroyuki, Iida, Kei, Liang, Haozhao
Rok vydání:	2024
Předmět:	High Energy Physics - Phenomenology Condensed Matter - Quantum Gases High Energy Physics - Theory Nuclear Theory
Druh dokumentu:	Working Paper
Popis:	We theoretically investigate a non-relativistic trace anomaly and its impact on the low-temperature equation of state in spatially one-dimensional three-component fermionic systems with a three-body interaction, which exhibit a non-trivial three-body crossover from a bound trimer gas to dense fermionic matter with increasing density. By applying the $G$-matrix approach to the three-body interaction, we obtain the analytical expression for the ground-state equation of state relevant to the high-density degenerate regime and thereby address how the three-body contact or, equivalently, the trace anomaly emerges. The analytical results are compared with the recent quantum Monte Carlo data. Our study of the trace anomaly and the sound speed could have some relevance to the physics of hadron-quark crossover in compact stars. Comment: 7 pages, 4 figures
Databáze:	arXiv
Externí odkaz:	http://arxiv.org/abs/2402.04960 Zobrazit plný text záznamu View this record from Arxiv