Conveners
Quantum/Gravity Wave/Phase Transitions
- Dorival Gonçalves (Oklahoma State University)
Recent studies suggest that the symmetries underlying fundamental interactions may have a quantum-information–theoretic origin.By analyzing the relativistic S-matrix as a quantum logic gate acting on the bipartite Hilbert space, one can explicitly trace how Lagrangian-level symmetries are realized in the space of quantum states. In this work, we focus on the entanglement structure in the...
Dark matter (DM) models with a conserved particle$-$antiparticle number, $n_\chi-n_{\tilde \chi}$, and the asymmetry in the cosmological abundance $n_\chi\neq n_{\tilde \chi}$, are known to be challenged by the existence of old neutron stars (NSs), as the sufficient accumulation of DM will lead to the collapse of NSs into black holes. We demonstrate that the applicability of these constraints...
We study how an early matter dominated (EMD) epoch affects the thermal history and first-order phase transitions (FOPT) in the early Universe. A heavy scalar with field-dependent decay width drives reheating, producing non-adiabatic cooling and heating phases. These transitions change the expansion of Universe, shaping the primordial gravitational wave (GW) spectra from FOPT, which can exhibit...
Many extensions to the Standard Model are expected to yield first-order phase transitions (FOPTs) which could produce detectable signals of gravitational waves (GWs) and observable abundances of primordial black holes (PBHs). We study such FOPTs within conformal $B-L$ models, which naturally accommodate stronger GW signals due to supercooling. By scanning large regions of parameter space, we...
