7 citations · 11 across the 19 of their papers we have counts for
21 papers
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…
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…
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…
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…
Smoking Gun Signatures of Quasilocal Probability in Black Hole Ringdowns
Oem Trivedi, Alfredo Gurrola, Robert J. Scherrer
Building on recent work introducing the idea of Quasilocal Probability in curved spacetime, we develop its observational implications for black hole ringdown in detail. We show tha…
Direct cosmographic reconstruction of the quintessence potential
Saikat Chakraborty, Peter K. S. Dunsby, Robert J. Scherrer
We derive expressions for the first and second derivatives of the quintessence potential , in terms of and , as fu…
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…
Non-Hermitian Quantum Mechanics with Applications to Gravity
Oem Trivedi, Alfredo Gurrola, Robert J. Scherrer
Hermiticity is usually treated as a foundational axiom of quantum mechanics, guaranteeing real spectra and unitary time evolution. In this work we argue that Hermiticity is more na…
Partial Relief of the Hubble Tension and a Natural Self-Interacting Dark Matter Candidate From Staged Symmetry Breaking
Zachary J. Hoelscher, Thomas W. Kephart, Robert J. Scherrer +1
The values of the Hubble constant () inferred from the cosmic microwave background (CMB) and local measurements via the distance ladder exhibit a tension. In thi…
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…
Exact general solutions for cosmological scalar field evolution in a vacuum-energy dominated expansion
Patrick Hu, Robert J. Scherrer
We derive exact general solutions (as opposed to attractor particular solutions) for the evolution of a scalar field in a universe dominated by a background fluid with equation…
DESI-Like Hubble Expansion From Staged Symmetry Breaking: Constraints on Renormalizable Models
Zachary J. Hoelscher, Thomas W. Kephart, Robert J. Scherrer +1
The Dark Energy Spectroscopic Instrument (DESI) second data release shows a moderate preference for dark energy with a time-varying equation of state parameter, suggesting that the…
Early science acceleration experiments with GPT-5
Sébastien Bubeck, Christian Coester, Ronen Eldan +11
AI models like GPT-5 are an increasingly valuable tool for scientists, but many remain unaware of the capabilities of frontier AI. We present a collection of short case studies in…
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…
Comparing the Spatial Correlation of Binary Black Hole Mergers to Large-Scale Structure through the Illustris Simulation
Shaniya Jarrett, Kelly Holley-Bockelmann, Robert J. Scherrer
Gravitational waves (GWs) have provided a new lens through which to view the universe beyond traditional electromagnetic methods. The upcoming space-based gravitational wave missio…
Gravitational Effects of a Small Primordial Black Hole Passing Through the Human Body
Robert J. Scherrer
The gravitational effects of a primordial black hole (PBH) passing through the human body are examined, with the goal of determining the minimum mass necessary to produce significa…
What do we learn by mapping dark energy to a single value of ?
Samuel S. Taylor, Robert J. Scherrer
We examine several dark energy models with a time-varying equation of state parameter, , to determine what information can be derived by fitting the distance modulus in such…
A long freeze is hard to achieve in the presence of matter
Samuel Blitz, Robert J. Scherrer, Oem Trivedi
Certain holographic dark energy (HDE) models allow for the possibility of a ``long freeze,'' in which the scale factor evolves to a constant in the long-time limit. Here we extend…
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…
Gravitational Radiation Power Spectrum of Garfinkle-Vachaspati Cosmic String Loops
S. David Storm, Robert J. Scherrer
We examine the power spectrum of the th harmonic for Garfinkle-Vachaspati cosmic strings, which correspond to planar rectangular loops. While these loop tractories are sel…
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…