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pro vyhledávání: '"White, Graham A"'
A strong first-order electroweak phase transition (SFOEWPT) is essential for explaining baryogenesis and for potentially generating observable gravitational waves. This study investigates the potential of a high-energy muon collider to examine the oc
Externí odkaz:
http://arxiv.org/abs/2410.22700
A large primordial lepton asymmetry can lead to successful baryogenesis by preventing the restoration of electroweak symmetry at high temperatures, thereby suppressing the sphaleron rate. This asymmetry can also lead to a first-order cosmic QCD trans
Externí odkaz:
http://arxiv.org/abs/2407.17549
Obtaining a precise form for the predicted gravitational wave (GW) spectrum from a phase transition is a topic of great relevance for beyond Standard Model (BSM) physicists. Currently, the most sophisticated semi-analytic framework for estimating the
Externí odkaz:
http://arxiv.org/abs/2407.02580
We clarify the conditions of the cosmic quantum chromodynamics (QCD) first-order phase transition in the early universe by carefully distinguishing the chiral and deconfinement phase transitions. While the chiral one with light quarks at zero chemica
Externí odkaz:
http://arxiv.org/abs/2405.00490
Autor:
Roshan, Rishav, White, Graham
Gravitational waves are a unique probe of the early Universe, as the Universe is transparent to gravitational radiation right back to the end of inflation. In this article, we summarise detection prospects and the wide scope of primordial events that
Externí odkaz:
http://arxiv.org/abs/2401.04388
We explore the phenomenological consequences of breaking discrete global symmetries in quantum gravity (QG). We extend a previous scenario where discrete global symmetries are responsible for scalar dark matter (DM) and domain walls (DWs), to the cas
Externí odkaz:
http://arxiv.org/abs/2311.12487
An epoch of matter domination in the early universe can enhance the primordial stochastic gravitational wave signal, potentially making it detectable to upcoming gravitational wave experiments. However, the resulting gravitational wave signal is quit
Externí odkaz:
http://arxiv.org/abs/2311.12340
A large primordial lepton asymmetry is capable of explaining the baryon asymmetry of the Universe (BAU) through suppression of the electroweak sphaleron rates (``sphaleron freeze-in") which can lead to a first-order cosmic QCD transition with an obse
Externí odkaz:
http://arxiv.org/abs/2309.00672
Autor:
Flores, Marcos M., Kusenko, Alexander, Pearce, Lauren, Perez-Gonzalez, Yuber F., White, Graham
Supersymmetry predicts multiple flat directions, some of which carry a net baryon or lepton number. Condensates in such directions form during inflation and later fragment into Q-balls, which can become the building blocks of primordial black holes.
Externí odkaz:
http://arxiv.org/abs/2308.15522
We explore how quantum gravity effects, manifested through the breaking of discrete symmetry responsible for both Dark Matter and Domain Walls, can have observational effects through CMB observations and gravitational waves. To illustrate the idea we
Externí odkaz:
http://arxiv.org/abs/2308.03724