- Black Holes and Theoretical Physics
- Pulsars and Gravitational Waves Research
- Cosmology and Gravitation Theories
- Astrophysical Phenomena and Observations
- Cold Atom Physics and Bose-Einstein Condensates
- Simulation Techniques and Applications
- Quantum Electrodynamics and Casimir Effect
- Advanced Thermodynamics and Statistical Mechanics
- High-Energy Particle Collisions Research
- Quantum Chromodynamics and Particle Interactions
- Gamma-ray bursts and supernovae
- Quantum, superfluid, helium dynamics
- Particle physics theoretical and experimental studies
- Business Process Modeling and Analysis
Columbia University
2019-2023
We investigate the predictive power of transverse-momentum-dependent (TMD) distributions as a function light-cone momentum fraction $x$ and hard scale $Q$ defined by process. apply saddle-point approximation to unpolarized quark gluon transverse evaluate position saddle point kinematics. determine quantitatively that for an distribution is maximal in large-$Q$ small-$x$ region. For cross sections TMD factorization formalism generally enhanced considering convolution two distributions, we...
A bstract We extend a formula for 1-loop black hole determinants by Denef, Hartnoll, and Sachdev (DHS) to spinning fields on any ( d + 1)-dimensional static spherically symmetric hole. By carefully analyzing the regularity condition imposed Euclidean eigenfunctions, we reveal an unambiguous bulk-edge split in partition function tensor of arbitrary integer spin: bulk part captures “renormalized” thermal canonical recently discussed [1]; edge is related quasinormal modes (QNMs) that fail...
A bstract An integral representation of the 1-loop partition function for charged scalars and spinors, minimally coupled to a uniform U(1) field on S 2 , is given in terms SO(1 2) Harish-Chandra group characters evaluated exactly Hurwitz ζ -functions. Analytically continuing field, we interpret path integrals as quasicanonical functions dS with an electric field. The character itself obtained trace over states living at future boundary de Sitter has quasinormal mode expansion. imaginary part...
We study real-time finite-temperature correlators for free scalars of any mass in a $dS_{d+1}$ static patch dimension. show that whenever the inverse temperature is rational multiple de Sitter temperature, certain Matsubara poles symmetric Wightman function disappear. At we explicitly how Lorentzian thermal can all be obtained by analytic continuations from round $S^{d+1}$. establish precise relation between Harish-Chandra character $SO(1,d+1)$ and integrated spectral function, providing...
A decision support system (DSS) is developed from a descriptive resource simulation of Air Canada’s passenger check-in process previously created in 2001 with Arena 3.0. Through time study and analysis, the impacts 9-11 on customer arrival service times are reflected updated model. The integration Visual Basic for Applications (VBA) front-end enables Canada management staff to easily enter manipulate flight schedules. What-if analysis can now be performed Understand significance different...
Abstract We present results from general relativistic calculations of nuclear ignition in white dwarf stars triggered by near encounters with rotating intermediate mass black holes different spin and alignment parameters. These create thermonuclear environments characteristic Type Ia supernovae capable producing both calcium iron-group elements arbitrary ratios, depending primarily on the proximity interaction which acts as a strong moderator nucleosynthesis. explore effects hole...
We extend a formula for 1-loop black hole determinants by Denef, Hartnoll, and Sachdev (DHS) to spinning fields on any $(d+1)$-dimensional static spherically symmetric hole. By carefully analyzing the regularity condition imposed Euclidean eigenfunctions, we reveal an unambiguous bulk-edge split in partition function tensor of arbitrary integer spin: bulk part captures "renormalized" thermal canonical recently discussed arXiv:2207.07024; edge is related quasinormal modes (QNMs) that fail...