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arXiv · 2112.01392

Ab initio nuclear thermodynamics from lattice effective field theory

Bing-Nan Lu·Ning Li·Serdar Elhatisari·Dean Lee·Joaquín E. Drut·Timo A. Lähde·Evgeny Epelbaum·Ulf-G. Meißner
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Abstract

We show that the {\it ab initio} calculations of nuclear thermodynamics can be performed efficiently using lattice effective field theory. The simulations use a new approach called the pinhole trace algorithm to calculate thermodynamic observables for a fixed number of protons and neutrons enclosed in a finite box. In this framework, we calculate the equation of state, the liquid-vapor coexistence line and the critical point of neutral symmetric nuclear matter with high precision. Since the algorithm uses a canonical ensemble with a fixed number of particles, it provides a sizable computational advantage over grand canonical ensemble simulations that can be a factor of several thousands to as much as several millions for large volume simulations.

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Bing-Nan Lu, Ning Li, Serdar Elhatisari, Dean Lee, Joaquín E. Drut, Timo A. Lähde, Evgeny Epelbaum, Ulf-G. Meißner. 2021-12-02. Ab initio nuclear thermodynamics from lattice effective field theory. https://arxiv.org/abs/2112.01392

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