33 citations · 67 across the 14 of their papers we have counts for
15 papers
Cuscuton Fifth Force: Implications of Non-Dynamical Scalars for Structure Growth
Adam Smith, Ilaria Andrei, Maria Mylova +1
The cuscuton is a scalar field that obeys a constraint rather than an evolution equation, so it modifies gravity without adding a propagating scalar degree of freedom. We study the…
Schwinger-Keldysh Path Integral for Gauge theories
Greg Kaplanek, Maria Mylova, Andrew J. Tolley
We develop the Schwinger-Keldysh path-integral formalism for open non-Abelian gauge theories that are gauge-fixed via the BRST method in covariant gauges. We focus on generic initi…
The Serendipitous Axiodilaton: A Self-Consistent Recombination-Era Solution to the Hubble Tension
Adam Smith, Maria Mylova, Carsten van de Bruck +2
Axio-dilaton cosmology provides a minimal benchmark model for both Dark Matter (DM) and Dark Energy (DE) that is well motivated by fundamental physics. The axion and dilaton arise…
Gauging Open EFTs from the top down
Greg Kaplanek, Maria Mylova, Andrew J. Tolley
We present explicit top-down calculations of Open EFTs for gauged degrees of freedom with a focus on the effects of gauge fixing. Starting from the in-in contour with two copies of…
Extending Weinberg's EFT: effective scalar-tensor theories up to sixth order
Eugeny Babichev, Sukŗti Bansal, Maria Mylova +1
We present a systematic construction of the six-derivative effective scalar-tensor theories, extending the four-derivative framework previously developed by Steven Weinberg. The on…
A Minimal Axio-dilaton Dark Sector
Adam Smith, Maria Mylova, Philippe Brax +3
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) $\u…
New shape for cross-bispectra in Chern-Simons gravity
Perseas Christodoulidis, Jinn-Ouk Gong, Wei-Chen Lin +2
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…
CMB Implications of Multi-field Axio-dilaton Cosmology
Adam Smith, Maria Mylova, Philippe Brax +3
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-…
Effective Cuscuton Theory
M. Mylova, N. Afshordi
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 gen…
New shape of parity-violating graviton non-Gaussianity
Jinn-Ouk Gong, Maria Mylova, Misao Sasaki
We show that the general vacuum states that respect the de Sitter symmetry, known as the α-vacua, can introduce non-vanishing parity-violating tensor non-Gaussianities. This is due…
General Effective Field Theory of Teleparallel Gravity
Maria Mylova, Jackson Levi Said, Emmanuel N. Saridakis
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…
Effective field theory of waterfall in hybrid inflation
Jinn-Ouk Gong, Maria Mylova
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 construc…
Non-Gaussian Signatures of a Thermal Big Bang
Maria Mylova, Marianthi Moschou, Niayesh Afshordi +1
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 bound…
Chiral primordial gravitational waves in extended theories of Scalar-Tensor gravity
Maria Mylova
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,…
Squeezed tensor non-Gaussianity in non-attractor inflation
Ogan Ozsoy, Maria Mylova, Susha Parameswaran +3
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 t…