Zobrazeno 1 - 10
of 47
pro vyhledávání: '"Santoni, Luca"'
Autor:
Rai, Mudit, Santoni, Luca
It is well known that asymptotically flat black holes in general relativity have vanishing tidal Love numbers. In the case of Schwarzschild and Kerr black holes, this property has been shown to be a consequence of a hidden structure of ladder symmetr
Externí odkaz:
http://arxiv.org/abs/2404.06544
Autor:
Podo, Alessandro, Santoni, Luca
We study relativistic fermionic systems in $3+1$ spacetime dimensions at finite chemical potential and zero temperature, from a path-integral point of view. We show how to properly account for the $i\varepsilon$ term that projects on the finite densi
Externí odkaz:
http://arxiv.org/abs/2312.14753
It is well known that asymptotically flat Schwarzschild black holes in general relativity in four spacetime dimensions have vanishing induced linear tidal response. We extend this result beyond linear order for the polar sector, by solving the static
Externí odkaz:
http://arxiv.org/abs/2312.05065
Publikováno v:
JHEP 09 (2023) 200
We consider ${\rm U}(1)$-symmetric scalar quantum field theories at zero temperature. At nonzero charge densities, the ground state of these systems is usually assumed to be a superfluid phase, in which the global symmetry is spontaneously broken alo
Externí odkaz:
http://arxiv.org/abs/2305.08896
We describe a new mechanism that gives rise to dissipation during cosmic inflation. In the simplest implementation, the mechanism requires the presence of a massive scalar field with a softly-broken global $U(1)$ symmetry, along with the inflaton fie
Externí odkaz:
http://arxiv.org/abs/2305.07695
Publikováno v:
Phys.Rev.D 108 (2023) 6, 064058
Scalar-tensor theories are a natural alternative to general relativity, as they may provide an effective dark energy phenomenology on cosmological scales while passing local tests, but their black hole solutions are still poorly understood. Here, we
Externí odkaz:
http://arxiv.org/abs/2304.12750
Publikováno v:
Phys.Rev.D 108 (2023) 8, 084011
We compute the tidal Love numbers and static response coefficients associated to several rotating black holes in higher dimensions, including Myers-Perry black holes, black rings, and black strings. These coefficients exhibit a rich and complex struc
Externí odkaz:
http://arxiv.org/abs/2304.03743
We derive soft theorems for theories in which time symmetries -- symmetries that involve the transformation of time, an example of which are Lorentz boosts -- are spontaneously broken. The soft theorems involve unequal-time correlation functions with
Externí odkaz:
http://arxiv.org/abs/2210.16276
Quasinormal modes describe the ringdown of compact objects deformed by small perturbations. In generic theories of gravity that extend General Relativity, the linearized dynamics of these perturbations is described by a system of coupled linear diffe
Externí odkaz:
http://arxiv.org/abs/2210.10788
Autor:
Hui, Lam, Law, Y. T. Albert, Santoni, Luca, Sun, Guanhao, Tomaselli, Giovanni Maria, Trincherini, Enrico
Studies of black hole superradiance often focus on the growth of a cloud in isolation, accompanied by the spin-down of the black hole. In this paper, we consider the additional effect of the accretion of matter and angular momentum from the environme
Externí odkaz:
http://arxiv.org/abs/2208.06408