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20182026
most citedRecent advances in cosmological singularities

30 citations · 203 across the 63 of their papers we have counts for

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18 papers · 1 filter

astro-ph.CO2026

ULTRAMAN: A Proposed ultrasound detector for macroscopic dark matter

Oem Trivedi, Robert J. Scherrer, Alfredo Gurrola

We propose ULTRAMAN (ULTRAsound Macro ANalyzer), a passive ultrasound array experiment designed to search for macroscopic dark matter (macros) through coherent acoustic disturbance…

astro-ph.CO2026

Dark Matter-Baryon Separability Predicts the Dynamics of an Almost-Dark Galaxy

Oem Trivedi, Abraham Loeb

We extend the Dark Matter-Baryon Separability Condition to show that the same framework developed for dark matter deficient galaxies naturally admits a conjugate branch describing…

astro-ph.CO2026

Dark Energy in the Plane

Oem Trivedi, Robert J. Scherrer, Alfredo Gurrola

We introduce a unified framework for dark energy diagnostics based on the joint phase space of the equation of state and the sound speed . The resulting plane…

astro-ph.CO2026

Solar System Probes for Scalar Field Dark Matter

Edmund Ghampson, Oem Trivedi, Robert J. Scherrer +1

Scalar field dark matter provides us with a well motivated alternative to conventional particle dark matter, especially when ultralight fields form coherent oscillations or compact…

astro-ph.CO2026

Nonlinear Dynamical Regimes of Cosmological Frequency Combs

Madhurendra Mishra, Oem Trivedi, Adarsh Ganesan

We study the emergence of Cosmological Frequency Combs (CFCs) in a quintessence cosmology with an exponential potential using a dynamical systems formulation. Expressing the evolut…

astro-ph.CO2026

Apocalypse When? Solar System Constraints on an Imminent Big Rip

Robert J. Scherrer, Oem Trivedi

Phantom dark energy models with an equation of state parameter lead generically to a future big rip singularity, in which the dark energy density becomes infinite in a fin…

astro-ph.CO2026

Probing Dark Energy on the Moon

Alfredo Gurrola, Robert J. Scherrer, Oem Trivedi

The effective field theory (EFT) of cosmic acceleration provides a model-independent framework for describing dark energy and modified gravity, yet many of its defining operators r…

astro-ph.CO2026★ 1 cited

Does Cosmology require Hermiticity in Quantum Mechanics?

Oem Trivedi, Alfredo Gurrola

We explore the consequences of allowing non-Hermitian structures in quantum cosmology by extending the Wheeler DeWitt framework beyond strictly Hermitian dynamics. Using a controll…

astro-ph.CO2026

Probing the Sound Speed of Dark Energy with a Lunar Laser Interferometer

Alfredo Gurrola, Robert J. Scherrer, Oem Trivedi

The sound speed of dark energy encodes fundamental information about the microphysics underlying cosmic acceleration, yet remains essentially unconstrained by existing observations…

astro-ph.CO2026

Particle production and Higgs reheating

Aarav Shah, Kanabar Jay, Maxim Khlopov +2

Reheating is essential for transforming the cold, vacuum dominated Universe at the end of inflation into the hot thermal bath required by the Standard Model. In many well motivated…

astro-ph.CO2025

Future Dark Energy Constraints from Atomic Clocks

Oem Trivedi

We show that atomic clock measurements provides an exceptionally sensitive Solar System probe of scalar tensor dark energy. By connecting variations in Newton's constant and differ…

astro-ph.CO2025★ 1 cited

Game Theory in Cosmology

Oem Trivedi, Venkat Venkatsubramanian

We present a game-theoretic statistical framework for cosmology, which we term \textit{Cosmological Teleodynamics}. We recast the dark sector, cosmic acceleration, large-scale stru…

astro-ph.CO2025★ 1 cited

Dark Matter from Holography

Oem Trivedi, Robert J. Scherrer

Previous studies have examined the holographic principle as a means of producing dark energy. Here we propose instead the possibility of holographic dark matter. In this case, dark…

astro-ph.CO2025

Gaussian Planck Relics are Ruled-Out as Dark Matter by LIGO

Oem Trivedi, Abraham Loeb

Quantum Gravity models suggest that singularities in gravitational collapse can be replaced by bounces, leading to the formation of Planck star remnants (PSR) that survive as stabl…

astro-ph.CO2025★ 1 cited

Cosmological Frequency Combs

Oem Trivedi, Madhurendra Mishra, Adarsh Ganesan

We identify a new class of time periodic attractor solutions in scalar field cosmology, which we term Cosmological Frequency Combs (CFC). These solutions arise in exponential quint…

astro-ph.CO2024

The long freeze: an asymptotically static universe from holographic dark energy

Samuel Blitz, Robert J. Scherrer, Oem Trivedi

We show that some holographic dark energy models can lead to a future evolution of the universe in which the scale factor is asymptotically constant, while $\dot a \rightarrow…

astro-ph.CO2024★ 7 cited

New perspectives on future rip scenarios with holographic dark energy

Oem Trivedi, Robert J. Scherrer

We explore the asymptotic future evolution of holographic dark energy (HDE) models, in which the density of the dark energy is a function of a cutoff scale . We develop a genera…

astro-ph.CO2020★ 1 cited

Implications of single field inflation in general cosmological scenarios on the nature of dark energy given the swampland conjectures

Oem Trivedi

Swampland Conjectures have attracted quite some interest in the Cosmological Community. They have been shown to have wide ranging implications , like Constraints on Inflationary Mo…