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Topics in Theoretical Particle Physics and Cosmology [PDF]
, 2007 We first delve into particle phenomenology with a study of soft-collinear effective theory (SCET), an effective theory for Quantum Chromodynamics for when all particles are approximately on their light-cones. In particular, we study the matching of SCET(
Salem, Michael Phillip
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The early universe is ACT-ing warm [PDF]
Journal of Cosmology and Astroparticle PhysicsThe recently released data from the Atacama Cosmology Telescope (ACT) confirms that the primordial scalar spectrum is extremely flat. This, together with current upper bounds on the tensor-to-scalar ratio, implies that the simplest models of inflation ...
A. Berera +4 more
semanticscholar +1 more source
REVIEW OF PARTICLE PHYSICS [PDF]
, 2022 The Review summarizes much of particle physics and cosmology. Using data from previous editions, plus 2,143 new measurements from 709 papers, we list, evaluate, and average measured properties of gauge bosons and the recently discovered Higgs boson ...
al., et +6 more
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宇宙早期双通道真空框架下量子阱的稳态场模型A Steady-State Field Model for Quantum Wells in a Dual-Channel Vacuum Framework at the Early Universe At the beginning of the universe, the physical processes of matter formation and development involve annihilation reaction pairs within particles. This paper assumes that in the early quantum spacetime, there were sufficient
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Journal of High Energy Physics, 2022 Hawking evaporation of primordial black holes (PBHs) can facilitate the generation of matter-antimatter asymmetry. We focus on ultra-low mass PBHs that briefly dominate the universe and evaporate before the big bang nucleosynthesis.
Nilanjandev Bhaumik +2 more
doaj +1 more source
Gravitational waves from the sound shell model: direct and inverse phase transitions in the early Universe [PDF]
Journal of Cosmology and Astroparticle PhysicsCosmological first order phase transitions are a frequent phenomenon in particle physics beyond the Standard Model, and the corresponding gravitational wave signal offers a key probe of new physics in the early Universe.
Giulio Barni +3 more
semanticscholar +1 more source
Journal of High Energy Physics, 2022 Combining the Higgs searches at the LHC, we study the Higgs inflation in the type-I and type-II two-Higgs-doublet models with non-minimally couplings to gravity.
Lei Wang
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Axion inflation in the strong-backreaction regime: decay of the Anber-Sorbo solution
Journal of High Energy Physics, 2023 Axion inflation coupled to Abelian gauge fields via a Chern-Simons-like term of the form ϕF F ~ $$ \phi F\overset{\sim }{F} $$ represents an attractive inflationary model with a rich phenomenology, including the production of magnetic fields, black holes,
Richard von Eckardstein +4 more
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ELENA: a software for fast and precise computation of first order phase transitions and gravitational waves production in particle physics models [PDF]
The European Physical Journal CWe present ELENA (EvaLuator of tunnElliNg Actions), an open-source Python package designed to compute the full evolution of first-order phase transitions in the early Universe generated by particle physics models, taking into account several refinements ...
Francesco Costa +4 more
semanticscholar +1 more source
Signals from the Early Universe: Black Holes, Gravitational Waves and Particle Physics
, 2022 We dedicate this thesis to the study of signatures coming from the primordial epochs of the universe. We will focus in particular on Primordial Black Holes (PBHs), which may be formed from perturbations generated during inflation and might comprise a fraction of the dark matter in the universe.
openaire +4 more sources