PoS - Proceedings of Science
Volume 396 - The 38th International Symposium on Lattice Field Theory (LATTICE2021) - Plenary presentation
Ab initio nuclear thermodynamics from lattice effective field theory
B. Lu*, N. Li, S. Elhatisari, D. Lee, J.E. Drut, T.A. Lahde, E. Epelbaum and U.G. Meissner
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Pre-published on: May 16, 2022
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We show that the 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.
DOI: https://doi.org/10.22323/1.396.0007
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