scholarly journals Vacuum states from a resolution of the lightcone singularity

2021 ◽  
pp. 136507
Author(s):  
G. Papadopoulos
Keyword(s):  
Vacuum States

scholarly journals Covariant phase space and soft factorization in non-Abelian gauge theories

2021 ◽  
Vol 2021 (3) ◽  
Author(s):  
Temple He ◽  
Prahar Mitra
Keyword(s):  
Phase Space ◽  
Ward Identity ◽  
Gauge Theories ◽  
Minkowski Spacetime ◽  
Soft Gluon ◽  
Careful Study ◽  
Abelian Gauge ◽  
Gauge Sector ◽  
Vacuum States ◽  
The One

Abstract We perform a careful study of the infrared sector of massless non-abelian gauge theories in four-dimensional Minkowski spacetime using the covariant phase space formalism, taking into account the boundary contributions arising from the gauge sector of the theory. Upon quantization, we show that the boundary contributions lead to an infinite degeneracy of the vacua. The Hilbert space of the vacuum sector is not only shown to be remarkably simple, but also universal. We derive a Ward identity that relates the n-point amplitude between two generic in- and out-vacuum states to the one computed in standard QFT. In addition, we demonstrate that the familiar single soft gluon theorem and multiple consecutive soft gluon theorem are consequences of the Ward identity.

Generation of Squeezed Vacuum States via Polarization Self-Rotation

2009 ◽  
Author(s):  
G. Campbell ◽  
C. Healey ◽  
J. Appel ◽  
K.-P. Marzlin ◽  
A. I. Lvovsky ◽  
...  
Keyword(s):  
Squeezed Vacuum ◽  
Vacuum States

Kt3 form factors,F K/F π and the symmetry-breaking parameter of the vacuum states

1970 ◽  
Vol 70 (4) ◽  
pp. 549-563
Author(s):  
C. S. Lai ◽  
H. E. Lin ◽  
W. C. Lin
Keyword(s):  
Symmetry Breaking ◽  
Form Factors ◽  
Vacuum States ◽  
Breaking Parameter

Liquid State Polydimethylsiloxane (PDMS) Wrinkle Formation Process for Various Applications.

2010 ◽  
Vol 1272 ◽  
Author(s):  
Sang Hoon Lee ◽  
Jangbae Jeon ◽  
Sang Ho Lee ◽  
Moon J. Kim
Keyword(s):  
Thin Film ◽  
Formation Process ◽  
Liquid State ◽  
Metal Particles ◽  
Film Electrode ◽  
Biological Applications ◽  
Vacuum Plasma ◽  
Vacuum States ◽  
Flexible Metal ◽  
Deposition Conditions

AbstractHere we report an epoch-making simple fabrication for wrinkle formation. The present wrinkle formation process is a solution for controlling the area, shape and direction of wrinkle area by forming wrinkles on the liquid state polydimethylsiloxane directly exposed to sputtered metal particles in the low vacuum plasma chamber in various vacuum states and deposition conditions. Also the process allows us to make extremely flexible metal thin film electrode with approved adhesion. These bring us possibilities of actual electrical and biological applications.

scholarly journals Bounding f(R) gravity by particle production rate

2016 ◽  
Vol 25 (04) ◽  
pp. 1630010 ◽  
Author(s):  
Salvatore Capozziello ◽  
Orlando Luongo ◽  
Mariacristina Paolella
Keyword(s):  
Field Theory ◽  
Particle Production ◽  
High Redshift ◽  
Dark Side ◽  
Quantum Field ◽  
Quantum Vacuum ◽  
Vacuum States ◽  
Text Model ◽  
Free Parameters ◽  
The Given

Several models of [Formula: see text] gravity have been proposed in order to address the dark side problem in cosmology. However, these models should be constrained also at ultraviolet scales in order to achieve some correct fundamental interpretation. Here, we analyze this possibility comparing quantum vacuum states in given [Formula: see text] cosmological backgrounds. Specifically, we compare the Bogolubov transformations associated to different vacuum states for some [Formula: see text] models. The procedure consists in fixing the [Formula: see text] free parameters by requiring that the Bogolubov coefficients can be correspondingly minimized to be in agreement with both high redshift observations and quantum field theory predictions. In such a way, the particle production is related to the value of the Hubble parameter and then to the given [Formula: see text] model. The approach is developed in both metric and Palatini formalism.

scholarly journals Multiphoton nonclassical correlations in entangled squeezed vacuum states

2013 ◽  
Vol 87 (3) ◽  
Author(s):  
Bhaskar Kanseri ◽  
Timur Iskhakov ◽  
Georgy Rytikov ◽  
Maria Chekhova ◽  
Gerd Leuchs
Keyword(s):  
Squeezed Vacuum ◽  
Vacuum States

Slater Determinants and Quasiparticle Vacuum States Constructed from a Finite Number of Fermion States

1969 ◽  
Vol 177 (4) ◽  
pp. 1514-1518 ◽  
Author(s):  
A. M. Navon ◽  
A. K. Bose
Keyword(s):  
Finite Number ◽  
Vacuum States

scholarly journals Blowup Criterion for Viscous Baratropic Flows with Vacuum States

2010 ◽  
Vol 301 (1) ◽  
pp. 23-35 ◽  
Author(s):  
Xiangdi Huang ◽  
Jing Li ◽  
Zhouping Xin
Keyword(s):  
Blowup Criterion ◽  
Vacuum States

Scheme for generating GHZ-type and W-type entangled squeezed vacuum states in free-travelling optical fields

2016 ◽  
Vol 358 ◽  
pp. 54-58 ◽  
Author(s):  
Jing-Ji Wen ◽  
Kyu-Hwang Yeon ◽  
Li-Li Zhang ◽  
Jia-Ling Wang ◽  
Chang-Tao Mo ◽  
...  
Keyword(s):  
Optical Fields ◽  
Squeezed Vacuum ◽  
Vacuum States
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