103 citations · 675 across the 29 of their papers we have counts for
29 papers
Infrared (in)sensitivity of relativistic effects in cosmological observable statistics
Ermis Mitsou, Jaiyul Yoo, Matteo Magi
The relativistic effects in cosmological observables contain critical information about the initial conditions and gravity on large scales. Compared to the matter density fluctuati…
Large gauge transformations, local coordinates and cosmological observables
Ermis Mitsou, Jaiyul Yoo
In recent years new types of coordinate transformations have appeared in cosmology on top of the standard gauge transformations, such as the dilatations and special conformal trans…
Non-Gaussianity in the Squeezed Three-Point Correlation from the Relativistic Effects
Jaiyul Yoo, Nastassia Grimm, Ermis Mitsou
Assuming a LCDM universe in a single-field inflationary scenario, we compute the three-point correlation function of the observed matter density fluctuation in the squeezed triangu…
The spatial gauge-dependence of single-field inflationary bispectra
Ermis Mitsou, Jaiyul Yoo
In single-field inflationary models the bispectra are usually given in the -gauge, because its temporal part leads to the super-horizon conservation of fluctuations. However, th…
Pure Lorentz spin connection theories and uniqueness of General Relativity
Kirill Krasnov, Ermis Mitsou
General Relativity can be reformulated as a diffeomorphism invariant gauge theory of the Lorentz group, with Lagrangian of the type , where is the curvature 2-for…
Deformations of GR, Geometrodynamics and Reality Conditions
Kirill Krasnov, Ermis Mitsou
In four dimensions complexified General Relativity (GR) can be non-trivially deformed: There exists an (infinite-parameter) set of modifications all having the same count of degree…