A5015709753- Particle physics theoretical and experimental studies
- High-Energy Particle Collisions Research
- Dark Matter and Cosmic Phenomena
- Quantum Chromodynamics and Particle Interactions
- Pulsars and Gravitational Waves Research
- Cosmology and Gravitation Theories
- Astrophysical Phenomena and Observations
- Neutrino Physics Research
- Black Holes and Theoretical Physics
- Cold Atom Physics and Bose-Einstein Condensates
- Mechanical and Optical Resonators
- Experimental and Theoretical Physics Studies
- Nuclear physics research studies
- Astronomical Observations and Instrumentation
- Advanced MEMS and NEMS Technologies
University of Illinois Urbana-Champaign
2019-2023
Stanford University
2017-2022
Perimeter Institute
2017
We review recent developments on the thermodynamics of black holes in extended phase space, where cosmological constant is interpreted as thermodynamic pressure and treated a variable its own right. In this approach, mass hole no longer regarded internal energy, rather it identified with chemical enthalpy. This leads to an dictionary for quantities, particular notion volume emerges given spacetime. conjectured satisfy reverse isoperimetric inequality - imposing bound amount entropy can carry...
The process of superradiance can extract angular momentum and energy from astrophysical black holes (BHs) to populate gravitationally-bound states with an exponentially large number light bosons. We analytically calculate superradiant growth rates for vectors around rotating BHs in the regime where vector Compton wavelength is much larger than BH size. Spin-1 bound have times as short a second stellar BHs, growing up thou- sand faster their spin-0 counterparts. fast allow us use measurements...
The levitated sensor detector (LSD) is a compact resonant gravitational-wave (GW) based on optically trapped dielectric particles that under construction. LSD sensitivity has more favorable frequency scaling at high frequencies compared to laser interferometer detectors such as LIGO and VIRGO. We propose method substantially improve the by levitating multilayered stack of discs. These stacks allow use massive object while exhibiting minimal photon recoil heating due light scattering. Over an...
Evidence for a flavor asymmetry between the $\overline{u}$ and $\overline{d}$ quark distributions in proton has been found deep-inelastic scattering Drell-Yan experiments. The pronounced dependence of this on $x$ (fraction nucleon momentum carried by partons) observed Fermilab E866 experiment suggested drop $\overline{d}(x)/\overline{u}(x)$ ratio $x>0.15$ region. We report results from SeaQuest E906 with improved statistical precision large region up to $x=0.45$ using 120 GeV beam. Two...
A bstract We present models in which axions have large couplings to hadrons while remaining naturally light. By assigning U(1) PQ charges Standard Model quarks such that is not anomalous under QCD, the derivative arise no potential generated for axion upon QCD confinement. simple implement this idea both an axion-like particle and axion. show lead sizable flavor violations could be probed by future experiments. Our construction shows coupling can essentially independent from its mass thus...
The SeaQuest spectrometer at Fermilab was designed to detect oppositely-charged pairs of muons (dimuons) produced by interactions between a 120 GeV proton beam and liquid hydrogen, deuterium solid nuclear targets. primary physics program uses the Drell-Yan process probe antiquark distributions in target nucleon. consists system, two dipole magnets four detector stations. upstream magnet is closed-aperture iron which also serves as dump, while second an open aperture magnet. Each stations...
The Levitated Sensor Detector (LSD) is a compact resonant gravitational-wave (GW) detector based on optically trapped dielectric particles that under construction. LSD sensitivity has more favorable frequency scaling at high frequencies compared to laser interferometer detectors such as LIGO. We propose method substantially improve the by levitating multi-layered stack of discs. These stacks allow use massive levitated object while exhibiting minimal photon recoil heating due light...