Listening to the long ringdown: a novel way to pinpoint the equation of state in neutron-star cores
We show that the behavior of the gravitational wave emission in the post-merger phase of a binary neutron-star merger should show a tight correlation with the pressure and density reached in the cores of maximally massive neutron stars.
Mar 5, 2024
Equation of state at neutron-star densities and beyond from perturbative QCD
We show that equations of state that are extremely stiff within the cores of maximally massive neutron stars are incompatible with the behavior of the speed of sound at high densities 25-40$n_\mathrm{sat}$
Dec 21, 2023
Quark matter and nuclear astrophysics: Recent developments
Proceedings from Quark Matter 2023 summarizing my recent work (as well as a few others') on quark matter and nuclear astrophysics.
Dec 15, 2023
Neutron stars
The densest objects in the universe supported by nuclear forces. Much is still unknown about the properties of the cores of these extreme stars. Much of my research focuses on techniques to understand the thermodynamic properties (such as the equation of state) of state of neutron-star matter. Specifically I have worked to synthesize inputs from astrophysics, nuclear theory, and particle theory to shed light on the behavior of the matter within the cores of the most massive neutron stars. Recently I have also begun to explore transport properties of cold and dense matter, which are more sensitive to the degrees of freedom than thermodynamic properties are.
Oct 26, 2023
Bounding the QCD Equation of State with the Lattice
We show that the pressure of phase-quenched QCD -- a theory that is simpler to compute on the lattice -- agrees with the pressure of true QCD up to next-to-next-to-next to leading order, where it differes in only one part of one diagram (pictured).
Sep 26, 2023
Equation of State of Cold Quark Matter to $O(\alpha_s^3 \ln \alpha_s)$
We calculate the state-of-the-art pressure of cold and dense deconfined matter by accounting for the physics from all of the long-wavelength, dynamically screened gluons at next-to-next-to-next-to-leading order.
Jul 17, 2023
3 Lectures on Neutron stars and their equation of state
May 15, 2022
Lectures on Perturbative QCD at high densities
A two-hour lecture on the basics of in-medium field theory as applied to cold quark matter at high densities.
Nov 17, 2021
Youtube interview with the Cosmic Companion
An interview about my Nature Physics paper, providing compelling evidence for the existence of deconfined cold quark matter in the cores of the most massive neutron stars in the universe.
Jun 23, 2020