Zobrazeno 1 - 10
of 31
pro vyhledávání: '"Revello, Filippo"'
Autor:
Revello, Filippo, Villa, Gonzalo
Cosmic (super)strings offer promising ways to test ideas about the early universe and physics at high energies. While in field theory constructions their tension is usually assumed to be constant (or at most slowly-varying), this is often not the cas
Externí odkaz:
http://arxiv.org/abs/2411.04186
We perform a detailed study of stringy moduli-driven cosmologies between the end of inflation and the commencement of the Hot Big Bang, including both the background and cosmological perturbations: a period that can cover half the lifetime of the uni
Externí odkaz:
http://arxiv.org/abs/2401.04064
Autor:
Revello, Filippo
We study the cosmological evolution of a FLRW universe dominated by the energy density of moduli close to asymptotic regions of moduli space. Due to the structure of the $\mathcal{N}=1$ SUGRA kinetic term, a saxion and an axion residing in the same c
Externí odkaz:
http://arxiv.org/abs/2311.12429
We study runaway, kination-dominated epochs in string cosmology. We show how the apparent classical decompactification runaway of the volume modulus, described by a kination epoch in the 4-dimensional EFT, can be uplifted to a classical Kasner soluti
Externí odkaz:
http://arxiv.org/abs/2212.10293
Autor:
Conlon, Joseph P., Revello, Filippo
We study the overshoot problem in the context of post-inflationary string cosmology (in particular LVS). LVS cosmology features a long kination epoch as the volume modulus rolls down the exponential slope towards the final minimum, with an energy den
Externí odkaz:
http://arxiv.org/abs/2207.00567
Autor:
Podo, Alessandro, Revello, Filippo
We find all the integer charge solutions to the equations for the cancellation of local gauge anomalies in a class of gauge theories which extend the Standard Model (SM) by a gauge group of the form $G \times U(1)$, where $G$ is an arbitrary semisimp
Externí odkaz:
http://arxiv.org/abs/2205.03428
We give a concise argument that supersymmetric AdS type IIA DGKT flux vacua on general Calabi-Yaus have, interpreted holographically, integer conformal dimensions for low-lying scalar primaries in the dual CFT. These integers are independent of any c
Externí odkaz:
http://arxiv.org/abs/2202.09330
We introduce a class of composite axion models that provide a natural solution to the strong CP problem, and possibly account for the observed dark matter abundance. The QCD axion arises as a composite Nambu-Goldstone boson (NGB) from the dynamics of
Externí odkaz:
http://arxiv.org/abs/2112.09635
We extend studies of holographic aspects of moduli stabilisation scenarios to both fibred versions of LVS and the type IIA DGKT flux vacua. We study the holographic properties of the low-energy moduli Lagrangian that describes both the AdS vacuum and
Externí odkaz:
http://arxiv.org/abs/2110.06245
A class of chiral gauge theories is studied with accidentally-stable pseudo Nambu-Goldstone bosons playing the role of dark matter (DM). The gauge group contains a vector-like dark color factor that confines at energies larger than the electroweak sc
Externí odkaz:
http://arxiv.org/abs/2008.10607