Zobrazeno 1 - 10
of 9 938
pro vyhledávání: '"Holman, Richard"'
We derive the stochastic description of a massless, interacting scalar field in de Sitter space directly from the quantum theory. This is done by showing that the density matrix for the effective theory of the long wavelength fluctuations of the fiel
Externí odkaz:
http://arxiv.org/abs/1706.07805
Publikováno v:
Phys. Rev. D 91, 123518 (2015)
Non-Gaussianity in the distribution of inflationary perturbations, measurable in statistics of the cosmic microwave background (CMB) and large scale structure fluctuations, can be used to probe non-trivial initial quantum states for these perturbatio
Externí odkaz:
http://arxiv.org/abs/1504.01394
Publikováno v:
Phys. Rev. D 89, 063533 (2014)
If the large scale anomalies in the temperature power spectrum of the cosmic microwave background are of primordial origin, they may herald modifications to the slow roll inflationary paradigm on the largest scales. We study the possibility that the
Externí odkaz:
http://arxiv.org/abs/1307.4066
Publikováno v:
JHEP04,055 (2014)
In inflationary cosmology all particle states decay as a consequence of the lack of kinematic thresholds. The decay of an initial single particle state yields an \emph{entangled quantum state of the product particles}. We generalize and extend a mani
Externí odkaz:
http://arxiv.org/abs/1305.2441
Publikováno v:
JHEP 2013,116
The decay of a parent particle into two or more daughter particles results in an entangled quantum state as a consequence of conservation laws in the decay process. Recent experiments at Belle and BaBar take advantage of quantum entanglement and the
Externí odkaz:
http://arxiv.org/abs/1304.6110
Autor:
Boyanovsky, Daniel, Holman, Richard
Publikováno v:
JHEP,Volume 2011, Number 5, 47
We use a field theoretic generalization of the Wigner-Weisskopf method to study the stability of the Bunch-Davies vacuum state for a massless, conformally coupled interacting test field in de Sitter space. We find that in $\lambda \phi^4$ theory the
Externí odkaz:
http://arxiv.org/abs/1103.4648
Publikováno v:
Phys.Rev.D82:045027,2010
We study a model for the "GSI anomaly" in which we obtain the time evolution of the population of parent and daughter particles directly in real time, considering explicitly the quantum entanglement between the daughter particle and neutrino mass eig
Externí odkaz:
http://arxiv.org/abs/1006.5732
Publikováno v:
Phys.Rev.D82:013006,2010
In charged current weak interaction processes, neutrinos are produced in an entangled state with the charged lepton. This correlated state is disentangled by the measurement of the charged lepton in a detector at the production site. We study the dyn
Externí odkaz:
http://arxiv.org/abs/1005.3260
Publikováno v:
Int. J. Mod. Phys. A 26, 5261-5397 (2011)
The dynamics of neutrino mixing and oscillations are studied directly in finite real time in a model that effectively describes charged current weak interactions. Finite time corrections to the S-matrix result for the appearance and disappearance pro
Externí odkaz:
http://arxiv.org/abs/1002.2649