搜索结果: 1-12 共查到“经典场论 quantum”相关记录12条 . 查询时间(0.086 秒)
Noise kernel for a quantum field in Schwarzschild spacetime under the Gaussian approximation
quantum field Schwarzschild spacetime Gaussian approximation
2010/12/20
A method is given to compute the noise kernel, defined as the symmetrized con-nected 2-point function of the stress tensor, for the conformally invariant scalar field in the Hartle-Hawking state in Sc...
Quantum Field Theory, Black Holes and Holography
Quantum Field Theory Black Holes Holography
2010/12/21
These notes are an expanded version of lectures given at the Croatian School on Black Holes at
Trpanj, June 21-25, 2010. The aim is to provide a practical introduction to quantum field theory in curv...
Topics in Quantum Field Theory in Curved Space
particle production Hamiltonian diagonalization vacuum fluctuations singularity avoidance
2010/12/20
In these lectures we consider some topics of Quantum Field Theory in Curved Space. In the first one particle creation in curved space is studied from a mathematical point of view, especially, particle...
Linear amplification and quantum cloning for non-Gaussian continuous variables
Linear amplification quantum cloning non-Gaussian continuous variables
2010/10/19
We investigate phase-insensitive linear amplification at the quantum limit for single- and two-mode states and show that there exists a broad class of non-Gaussian states whose nonclassicality survive...
A perspectival version of the modal interpretation of quantum mechanics and the origin of macroscopic behavior
modal interpretation relational properties, measurement realism
2011/9/7
We study the process of observation (measurement), within the framework of a `perspectival' (`relational', `relative state')version of the modal interpretation of quantum mechanics. We show that if we...
On the classical limit of quantum mechanics and the threat of fundamental graininess and chaos to the correspondence principle
classical limit of quantum mechanics fundamental graininess and chaos correspondence principle
2010/10/21
The aim of this paper is to review the classical limit of Quantum Mechanics and to precise the well known threat of chaos (and fundamental graininess) to the correspondence principle. We will introduc...
Tight Bounds for Classical and Quantum Coin Flipping
Tight Bounds for Classical Quantum Coin Flipping
2010/10/21
Coin flipping is a cryptographic primitive for which strictly better protocols exist if the
players are not only allowed to exchange classical, but also quantum messages. During the past
few years, ...
We consider crossovers with respect to the weak convergence theorems from a discrete-time quan-
tum walk (DTQW). We show that a continuous-time quantum walk (CTQW) and discrete- and
continuous-time ...
Two interacting electrons in a magnetic field: comparison of semiclassical, quantum, and variational solutions
interacting electrons time-dependent variational principle
2010/10/27
The quantum mechanical many-body problem is rarely analytically solvable. One notable exception is the case of two electrons interacting via a Coulomb potential in a uniform magnetic field. The motion...
Quantum One-Way Communication is Exponentially Stronger Than Classical Communication
Quantum One-Way Communication Classical Communication
2010/10/27
In STOC 1999, Raz presented a (partial) function for which there is a quantum protocol
communicating only O(log n) qubits, but for which any classical (randomized, bounded-error)
protocol requires p...
Multidimensional quantum cosmic models: New solutions and gravitational waves
quantum cosmic gravitational waves
2010/3/18
This paper contains a discussion on the quantum cosmic models, starting with the interpretation that all of the accelerating effects in the current universe are originated from the existence of a nonz...
Query Complexity: Worst-Case Quantum Versus Average-Case Classical
Query Complexity Worst-Case Quantum Versus Average-Case Classical
2010/10/18
Withdrawn. The results in the paper only work for a certain subclass of Boolean functions, in which block sensitivity has properties similar to those of ordinary sensitivity. They don’t work in genera...