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- W4380791775 abstract "Numerical simulations of neutron star mergers represent an essential step toward interpreting the full complexity of multimessenger observations and constraining the properties of supranuclear matter. Currently, simulations are limited by an array of factors, including computational performance and input physics uncertainties, such as the neutron star equation of state. In this work, we expand the range of nuclear phenomenology efficiently available to simulations by introducing a new analytic parametrization of cold, beta-equilibrated matter that is based on the relativistic enthalpy. We show that the new enthalpy parametrization can capture a range of nuclear behavior, including strong phase transitions. We implement the enthalpy parametrization in the spectre code, simulate isolated neutron stars, and compare performance to the commonly used spectral and polytropic parametrizations. We find comparable computational performance for nuclear models that are well represented by either parametrization, such as simple hadronic equations of state. We show that the enthalpy parametrization further allows us to simulate more complicated hadronic models or models with phase transitions that are inaccessible to current parametrizations." @default.
- W4380791775 created "2023-06-16" @default.
- W4380791775 creator A5004840429 @default.
- W4380791775 creator A5011912817 @default.
- W4380791775 creator A5027900558 @default.
- W4380791775 creator A5049723221 @default.
- W4380791775 creator A5052075432 @default.
- W4380791775 creator A5059896049 @default.
- W4380791775 creator A5085938127 @default.
- W4380791775 date "2023-06-15" @default.
- W4380791775 modified "2023-10-15" @default.
- W4380791775 title "Simulating neutron stars with a flexible enthalpy-based equation of state parametrization in spectre" @default.
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