Zobrazeno 1 - 10
of 56
pro vyhledávání: '"P. Mýlová"'
Autor:
Smith, Adam, Mylova, Maria, Brax, Philippe, van de Bruck, Carsten, Burgess, C. P., Davis, Anne-Christine
In scalar-tensor theories it is the two-derivative sigma-model interactions that like to compete at low energies with the two-derivative interactions of General Relativity (GR) $\unicode{x2014}$ at least once the dangerous zero-derivative terms of th
Externí odkaz:
http://arxiv.org/abs/2410.11099
Chern-Simons gravity is known to suffer from graviton ghost production during inflation, which suppresses the parity-violating power spectrum at scales relevant to cosmic microwave background observations. In this work, we show that allowing the init
Externí odkaz:
http://arxiv.org/abs/2409.09935
Autor:
Smith, Adam, Mylova, Maria, Brax, Philippe, van de Bruck, Carsten, Burgess, C. P., Davis, Anne-Christine
Axio-dilaton models are among the simplest scalar-tensor theories that contain the two-derivative interactions that naturally compete at low energies with the two-derivative inter-actions of General Relativity. Such models are well-motivated as the l
Externí odkaz:
http://arxiv.org/abs/2408.10820
Autor:
Mylova, M., Afshordi, N.
Cuscuton field theory is an extension of general relativity that does not introduce additional propagating degrees of freedom, or violate relativistic causality. We construct a general geometric description of the cuscuton field theory by introducing
Externí odkaz:
http://arxiv.org/abs/2312.06066
We show that the general vacuum states that respect the de Sitter symmetry, known as the {\alpha}-vacua, can introduce non-vanishing parity-violating tensor non-Gaussianities. This is due to the mixing by the Bogoliubov transformation of the positive
Externí odkaz:
http://arxiv.org/abs/2303.05178
Publikováno v:
Classical and Quantum Gravity 2023
We construct the Effective Field Theory (EFT) of the teleparallel equivalent of general relativity (TEGR). Firstly, we present the necessary field redefinitions of the scalar field and the tetrads. Then we provide all the terms at next-to-leading-ord
Externí odkaz:
http://arxiv.org/abs/2211.11420
Autor:
Gong, Jinn-Ouk, Mylova, Maria
We examine the validity of the classical approximation of the waterfall phase transition in hybrid inflation from an effective field theory (EFT) point of view. The EFT is constructed by integrating out the waterfall field fluctuations, up to one-loo
Externí odkaz:
http://arxiv.org/abs/2202.13882
What if Big Bang was hot from its very inception? This is possible in a bimetric theory where the source of fluctuations is thermal, requiring the model to live on a critical boundary in the space of parameters and can be realized when an anti-DBI br
Externí odkaz:
http://arxiv.org/abs/2112.08179
Autor:
Mylova, Maria
We re-examine the problem of parity violation in single field inflation. We look for a systematic way to parametrically approach the scale at which maximal parity violation occurs, which is where we expect to find the presence of the Chern Simons ins
Externí odkaz:
http://arxiv.org/abs/1912.00800
Autor:
Ozsoy, Ogan, Mylova, Maria, Parameswaran, Susha, Powell, Cari, Tasinato, Gianmassimo, Zavala, Ivonne
We investigate primordial tensor non-Gaussianity in single field inflation, during a phase of non-attractor evolution when the spectrum of primordial tensor modes can be enhanced to a level detectable at interferometer scales. Making use of a tensor
Externí odkaz:
http://arxiv.org/abs/1902.04976