359 citations · 1.5k across the 43 of their papers we have counts for
43 papers
Implementing Hamiltonian Renormalization Group Flow on Quantum Computers with VAPOR
Federica Fragomeno, Jorden Roberts, Saeed Rastgoo +1
While Hamiltonian Lattice Gauge Theory is gaining traction, today's limited numerical capacity leaves simulations affected by discretization errors. This motivates the implementati…
Relational quantum dynamics of the black hole interior: singularity resolution and quantum bounce
Paolo Fragolino, Saeed Rastgoo
We study the interior of the Schwarzschild black hole which is isometric to the Kantowski-Sachs cosmological model, using a fully relational and gauge-invariant quantization framew…
Effective Improved-GUP Cosmology: Emergent FLRW Universe without a Bounce
Saeed Rastgoo, Wilfredo Yupanqui
We investigate the effective dynamics of a spatially flat FLRW universe coupled to a massless scalar field by applying the improved generalized uncertainty principle (GUP)-inspired…
A rotating GUP black hole: metric, shadow, and bounds on quantum parameters
Federica Fragomeno, Samantha Hergott, Saeed Rastgoo +1
Recently, for the first time, a metric of a static spherically symmetric generalized uncertainty inspired quantum black hole was derived. We apply the modified Newman-Janis algorit…
Spherically Symmetric Gravity on a Graph I: Theoretical Foundations
Klaus Liegener, Saeed Rastgoo, Jorden Roberts
This manuscript is the first in a series of instalments that investigate spherically symmetric solutions within the effective dynamics program of Loop Quantum Gravity. The choice o…
Canonical Electrodynamics in Ashtekar-Barbero variables
Federica Fragomeno, Saeed Rastgoo
We present the full Hamiltonian analysis of electrodynamics, including fermions, photons, and their interaction, on a general curved spacetime in Ashtekar-Barbero variables. Only t…
Dynamical model for black hole to white hole transitions
Samantha Hergott, Viqar Husain, Saeed Rastgoo
We present an asymptotically flat spherically symmetric non-singular metric that describes gravitational collapse and matter bounce with transient black hole and white hole regions…
The CosmoVerse White Paper: Addressing observational tensions in cosmology with systematics and fundamental physics
Eleonora Di Valentino, Jackson Levi Said, Adam Riess +533
The standard model of cosmology has provided a good phenomenological description of a wide range of observations both at astrophysical and cosmological scales for several decades.…
Geometry of a generalized uncertainty-inspired spacetime
Douglas M. Gingrich, Saeed Rastgoo
We examine the geometry of a generalized uncertainty-inspired quantum black hole. The diagonal line element is not - symmetric, i.e. , which leads to an…
A generalized uncertainty-inspired quantum black hole
Federica Fragomeno, Douglas M. Gingrich, Samantha Hergott +2
We derive the full spacetime metric of a generalized uncertainty-inspired quantum black hole. We examine a previous model of the interior in this approach and show that extending i…
Post-Newtonian effects in compact binaries with a dark matter spike: A Lagrangian approach
Diego Montalvo, Adam Smith-Orlik, Saeed Rastgoo +3
We apply the Lagrangian method to study the post-Newtonian evolution of a compact binary system with environmental effects, including a dark matter spike, and obtain the resulting…
White Paper and Roadmap for Quantum Gravity Phenomenology in the Multi-Messenger Era
R. Alves Batista, G. Amelino-Camelia, D. Boncioli +101
The unification of quantum mechanics and general relativity has long been elusive. Only recently have empirical predictions of various possible theories of quantum gravity been put…
Black hole interior quantization: a minimal uncertainty approach
Pasquale Bosso, Octavio Obregón, Saeed Rastgoo +1
In a previous work we studied the interior of the Schwarzschild black hole implementing an effective minimal length, by applying a modification to the Poisson brackets of the theor…
Constraining the quantum gravity polymer scale using LIGO data
Angel Garcia-Chung, Matthew F. Carney, James B. Mertens +3
We present the first empirical constraints on the polymer scale describing polymer quantized GWs propagating on a classical background. These constraints are determined from the po…
What do gravitational wave detectors say about polymer quantum effects?
Angel Garcia-Chung, Matthew F. Carney, James B. Mertens +3
We compute the expected response of detector arms of gravitational wave observatories to polymerized gravitational waves. The mathematical and theoretical features of these waves w…
Probing the interior of the Schwarzschild black hole using congruences: LQG vs. GUP
Saeed Rastgoo, Saurya Das
We review, as well as provide some new results regarding the study of the structure of spacetime and the singularity in the interior of the Schwarzschild black hole in both loop qu…
Model metrics for quantum black hole evolution: Gravitational collapse, singularity resolution, and transient horizons
Samantha Hergott, Viqar Husain, Saeed Rastgoo
It is widely accepted that curvature singularity resolution should be a feature of quantum gravity. We present a class of time-dependent asymptotically flat spherically symmetric m…
New Horizons for Fundamental Physics with LISA
K. G. Arun, Enis Belgacem, Robert Benkel +138
The Laser Interferometer Space Antenna (LISA) has the potential to reveal wonders about the fundamental theory of nature at play in the extreme gravity regime, where the gravitatio…
Cosmology with the Laser Interferometer Space Antenna
Pierre Auclair, David Bacon, Tessa Baker +177
The Laser Interferometer Space Antenna (LISA) has two scientific objectives of cosmological focus: to probe the expansion rate of the universe, and to understand stochastic gravita…
Circularization vs. Eccentrification in Intermediate Mass Ratio Inspirals inside Dark Matter Spikes
Niklas Becker, Laura Sagunski, Lukas Prinz +1
Inspirals of an Intermediate Mass Black Hole (IMBH) and a solar mass type object will be observable by space based gravitational wave detectors such as The Laser Interferometer Spa…
Quantum gravity phenomenology at the dawn of the multi-messenger era -- A review
A. Addazi, J. Alvarez-Muniz, R. Alves Batista +157
The exploration of the universe has recently entered a new era thanks to the multi-messenger paradigm, characterized by a continuous increase in the quantity and quality of experim…
A model of polymer gravitational waves: theory and some possible observational consequences
Angel Garcia-Chung, James B. Mertens, Saeed Rastgoo +2
We propose a polymer quantization scheme to derive the effective propagation of gravitational waves on a classical Friedmann-Lemaitre-Robertson-Walker (FLRW) spacetime. These waves…
Effective black hole interior and the Raychadhuri equation
Keagan Blanchette, Saurya Das, Samantha Hergott +1
We show that loop quantum gravity effects leads to the finiteness of expansion and its rate of change in the effective regime in the interior of the Schwarzschild black hole. As a…
Effective GUP-modified Raychaudhuri equation and black hole singularity: four models
Keagan Blanchette, Saurya Das, Saeed Rastgoo
The classical Raychaudhuri equation predicts the formation of conjugate points for a congruence of geodesics, in a finite proper time. This in conjunction with the Hawking-Penrose…