147 citations · 1.4k across the 56 of their papers we have counts for
33 papers · 1 filter
Quantum teleportation between moving detectors
Shih-Yuin Lin, Chung-Hsien Chou, B. L. Hu
It is commonly believed that the fidelity of quantum teleportation using localized quantum objects with one party or both accelerated in vacuum would be degraded due to the heat-up…
Exact noise kernel for quantum fields in static de Sitter and conformally-flat spacetimes
Jason D. Bates, Hing-Tong Cho, Paul R. Anderson +1
We compute exact expressions of the noise kernel, defined as the expectation value of the symmetrized connected stress energy bitensor, for conformally-invariant scalar fields with…
Gravity and Nonequilibrium Thermodynamics of Classical Matter
B. L. Hu
Renewed interest in deriving gravity (more precisely, the Einstein equations) from thermodynamics considerations [1, 2] is stirred up by a recent proposal that 'gravity is an entro…
Intrinsic and Fundamental Decoherence: Issues and Problems
C. Anastopoulos, B. L. Hu
We investigate the meaning of gravity-induced decoherence in quantum theory, known as `intrinsic' or `fundamental' decoherence in the literature. We explore a range of issues relev…
Disentanglement of two harmonic oscillators in relativistic motion
Shih-Yuin Lin, Chung-Hsien Chou, B. L. Hu
We study the dynamics of quantum entanglement between two Unruh-DeWitt detectors, one stationary (Alice), and another uniformly accelerating (Rob), with no direct interaction but c…
Self-force on extreme mass ratio inspirals via curved spacetime effective field theory
Chad R. Galley, B. L. Hu
In this series we construct an effective field theory (EFT) in curved spacetime to study gravitational radiation and backreaction effects. We begin in this paper with a derivation…
Metric fluctuations of an evaporating black hole from back reaction of stress tensor fluctuations
B. L. Hu, Albert Roura
This paper delineates the first steps in a systematic quantitative study of the spacetime fluctuations induced by quantum fields in an evaporating black hole under the stochastic g…
Decoherence in Quantum Gravity: Issues and Critiques
C. Anastopoulos, B. L. Hu
An increasing number of papers have appeared in recent years on decoherence in quantum gravity at the Planck energy. We discuss the meaning of decoherence in quantum gravity starti…
New View on Quantum Gravity and the Origin of the Universe
B. L. Hu
This essay is based on a physics lecture given at the Hong Kong University of Science and Technology on May 24, 2006, Hong Kong. It has 5 sections and one page of references and su…
Backreaction and Unruh effect: New insights from exact solutions of uniformly accelerated detectors
Shih-Yuin Lin, B. L. Hu
Using nonperturbative results obtained recently for an uniformly accelerated Unruh-DeWitt detector, we discover new features in the dynamical evolution of the detector's internal d…
New Insights into Uniformly Accelerated Detector in a Quantum Field
Shih-Yuin Lin, B. L. Hu
We obtained an exact solution for a uniformly accelerated Unruh-DeWitt detector interacting with a massless scalar field in (3+1) dimensions which enables us to study the entire ev…
Electromagnetic and gravitational self-force on a relativistic particle from quantum fields in curved space
Chad R. Galley, B. L. Hu, Shih-Yuin Lin
We provide a quantum field theoretical derivation of the Abraham-Lorentz-Dirac (ALD) equation, describing the motion of an electric point charge sourcing an electromagnetic field,…
Fluctuations of an evaporating black hole from back reaction of its Hawking radiation: Questioning a premise in earlier work
B. L. Hu, Albert Roura
This paper delineates the first steps in a systematic quantitative study of the spacetime fluctuations induced by quantum fields in an evaporating black hole. We explain how the st…
Stability of semiclassical gravity solutions with respect to quantum metric fluctuations
B. L. Hu, Albert Roura, Enric Verdaguer
We discuss the stability of semiclassical gravity solutions with respect to small quantum corrections by considering the quantum fluctuations of the metric perturbations around the…
Self-force on a scalar charge in radial infall from rest using the Hadamard-WKB expansion
Paul R. Anderson, Ardeshir Eftekharzadeh, B. L. Hu
We present an analytic method based on the Hadamard-WKB expansion to calculate the self-force for a particle with scalar charge that undergoes radial infall in a Schwarzschild spac…
Accelerated Detector - Quantum Field Correlations: From Vacuum Fluctuations to Radiation Flux
Shih-Yuin Lin, B. L. Hu
In this paper we analyze the interaction of a uniformly accelerated detector with a quantum field in (3+1)D spacetime, aiming at the issue of how kinematics can render vacuum fluct…
Can Spacetime be a Condensate?
B. L. Hu
We explore further the proposal that general relativity is the hydrodynamic limit of some fundamental theories of the microscopic structure of spacetime and matter, i.e., spacetime…
Uniformly Accelerated Charge in a Quantum Field: From Radiation Reaction to Unruh Effect
Philip R. Johnson, B. L. Hu
We present a stochastic theory for the nonequilibrium dynamics of charges moving in a quantum scalar field based on the worldline influence functional and the close-time-path (CTP…
Induced quantum metric fluctuations and the validity of semiclassical gravity
B. L. Hu, Albert Roura, Enric Verdaguer
We propose a criterion for the validity of semiclassical gravity (SCG) which is based on the stability of the solutions of SCG with respect to quantum metric fluctuations. We pay s…
Noise Kernel and Stress Energy Bi-Tensor of Quantum Fields in Conformally-Optical Metrics: Schwarzschild Black Holes
Nicholas G Phillips, B. L. Hu
In Paper II [N. G. Phillips and B. L. Hu, previous abstract] we presented the details for the regularization of the noise kernel of a quantum scalar field in optical spacetimes by…
Recent Advances in Stochastic Gravity: Theory and Issues
B. L. Hu, E. Verdaguer
Whereas semiclassical gravity is based on the semiclassical Einstein equation with sources given by the expectation value of the stress-energy tensor of quantum fields, stochastic…
Notes on Black Hole Fluctuations and Backreaction
B. L. Hu, Alpan Raval, Sukanya Sinha
In these notes we prepare the ground for a systematic investigation into the issues of black hole fluctuations and backreaction by discussing the formulation of the problem, commen…
Hawking-Unruh Thermal Radiance as Relativistic Exponential Scaling of Quantum Noise
B. L. Hu
The Hawking-Unruh effect of thermal radiance from a black hole or observed by an accelerated detector is usually viewed as a geometric effect related to the existence of an event h…
Quantum Origin of Noise and Fluctuations in Cosmology
B. L. Hu, Juan Pablo Paz, Yuhong Zhang
We address two basic issues in the theory of galaxy formation from fluctuations of quantum fields: 1) the nature and origin of noise and fluctuations and 2) the conditions for usin…