Zobrazeno 1 - 10
of 9 911
pro vyhledávání: '"P. McDonough"'
We present radial profiles of luminosity-weighted age, $age_L$, and $\Delta \Sigma_{SFR}$ for various populations of high- and low- mass central and satellite galaxies in the TNG100 cosmological simulation. Using these profiles, we investigate the im
Externí odkaz:
http://arxiv.org/abs/2411.13666
In light of recent observations, we study evidence for thawing quintessence over a cosmological constant as dark energy, with emphasis on the effect of the choice of priors. Working with a parametrization for the equation of state parameter motivated
Externí odkaz:
http://arxiv.org/abs/2411.13637
Cosmological models are often motivated and formulated in the language of particle physics, using quantities such as the axion decay constant, but tested against data using ostensibly physical quantities, such as energy density ratios, assuming unifo
Externí odkaz:
http://arxiv.org/abs/2409.09029
Every regular matroid is associated with a sandpile group, which acts simply transitively on the set of bases in various ways. Ganguly and the second author introduced the notion of consistency to describe classes of actions that respect deletion-con
Externí odkaz:
http://arxiv.org/abs/2407.03999
Publikováno v:
JHEP 2024, 71 (2024)
Dark photons are a theorized massive spin-1 particle which can be produced via various mechanisms, including cosmological gravitational particle production (GPP) in the early universe. In this work, we extend previous results for GPP of dark photons
Externí odkaz:
http://arxiv.org/abs/2405.19390
Publikováno v:
Physical Review D 110 (2024), L061302
We demonstrate that "natural inflation", also known as "axion inflation", can be compatible with Planck 2018 measurements of the cosmic microwave background, while predicting an exponentially small tensor-to-scalar ratio, e.g., $r\sim 10^{-15}$. The
Externí odkaz:
http://arxiv.org/abs/2405.13881
We study the interplay of the trans-Planckian censorship conjecture (TCC) and the swampland distance conjecture (SDC) in the context of multifield dark energy in a curved field space. In this scenario, the phase of accelerated expansion is realized a
Externí odkaz:
http://arxiv.org/abs/2405.05304
Axion and axion-like particles (ALPs) are a prominent candidate for physics beyond the Standard Model, and can play an important role in cosmology, serving as dark matter or dark energy, or both, drawing motivation in part from the string theory axiv
Externí odkaz:
http://arxiv.org/abs/2404.11642
A natural unit interval order is a naturally labelled partially ordered set that avoids patterns ${\bf 3} + {\bf 1}$ and $\bf 2 + 2$. To each natural unit interval order one can associate a symmetric function. The Stanley-Stembridge conjecture states
Externí odkaz:
http://arxiv.org/abs/2404.07280
Publikováno v:
Phys.Rev.Lett. 133 (2024) 6, 061602
We demonstrate that gravitational particle production (GPP) of a massive, Abelian, vector (Proca) field during inflation in the presence of nonminimal coupling to gravity may suffer from an instability which leads to runaway production of high-moment
Externí odkaz:
http://arxiv.org/abs/2403.15536