Work

Weak rates in strongly coupled cold quark matter

Year: 2024

Type: article

Abstract: A bstract The rates of flavor-changing weak processes are crucial in determining the conditions of beta equilibrium in neutron stars and mergers, influencing the damping of oscillations, the stability of rotating pulsars, and the emission of gravitational waves. We derive a formula for these rates at nonzero temperature, to leading order in the Fermi coupling and exact in the QCD coupling. Utilizing a simple phenomenological holographic model dual to QCD, we study massless unpaired quark matter at high densities. We numerically compute the rate for small deviations from beta equilibrium and derive an analytic approximation for small temperatures. Our findings reveal that, compared to the perturbative result, the rate is suppressed by logarithmic factors of the temperature.

Source: Journal of High Energy Physics

DOI: 10.1007/jhep12(2024)058

Authors: Carlos Hoyos, Andrea Olzi, David Rodriguez-Fernandez

Institutions: Universidad de Oviedo, Istituto Nazionale di Fisica Nucleare, Sezione di Firenze, University of Florence, Universidad Politécnica de Madrid

Language: English

Topic: Pulsars and Gravitational Waves Research

Subfield: Astronomy and Astrophysics

Field: Physics and Astronomy

Domain: Physical Sciences

Open Access status: diamond

Funders: Ministerio de Ciencia, Innovación y Universidades, Universidad de Oviedo, Agencia Estatal de Investigación

Award: G594598535