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From Parallel Electric and Magnetic Fields
From Parallel Electric and Magnetic Fields

... propulsion. As such, it would be made possible by non-linear quantum field theory effects on the electromagnetic vacuum. ...
condensate in constant magnetic fields
condensate in constant magnetic fields

... result reduces to that of [9] derived through Schwinger proper time method. In 2  1 dimensions, we consider both parity conserving and parity violating Lagrangians. It is well known that for the parity conserving case, the flavor U2 breaks down to U1  U1 spontaneously, even though fermions ...
Slides - Indico
Slides - Indico

... http://space.mit.edu/home/tegmark/cmb/movies.html ...
Слайд 1 - I C R A
Слайд 1 - I C R A

... Thermodynamical properties of a quantum Universe filled with a medium playing the role of a reference frame. The transition to classical limit of General Relativity when all gauge-dependent effects must vanish. We need for some mechanism which would explain how in the result of quantum evolution the ...
Space-time description of squeezing
Space-time description of squeezing

... The relations between the out and the in operators will now be used to compare the properties of the radiation in the past and in the future. We assume that there was no radiation in the distant past so that the radiation observed in the future was generated by the medium. That means that the state ...
Symmetry breaking - Corso di Fisica Nucleare
Symmetry breaking - Corso di Fisica Nucleare

... Lorentz-invariance tells us that if Eq. (1.32) is true in one Lorentz frame, it is true in all Lorentz frames. Since any momentum eigenstate can be obtained by applying a Lorentz transformation to a state with zero 3-momentum, the latter equation is true for any momentum state on the left. This is t ...
Black Holes and the Decay of the Universe
Black Holes and the Decay of the Universe

... In “classical” regime, phase oscillates, probability uniform, but under barrier, phase is real and wave function is damped. ...
Quantum Field Theory II
Quantum Field Theory II

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ISM 08

... Rtt = 12 Φ̇2 ∼ t12 . Curvatures, tidal forces diverge near t = 0. ...
casimir effect in external magnetic field
casimir effect in external magnetic field

... conditions. In Section 2 we shall consider a complex scalar field confined between two infinite plates with Dirichlet boundary conditions with magnetic field in a direction perpendicular to the plates. In Section 3 we shall consider a Dirac quantum field under antiperiodic boundary conditions. This ...
transparencies - Indico
transparencies - Indico

... Understand basic elements of matter and their interactions New ideas might provide deeper connections among known physical quantities: masses, forces These are theories we can experimentally test ...
GPS Timing and Control System of the HAWC Detector. A. U. Abeysekara
GPS Timing and Control System of the HAWC Detector. A. U. Abeysekara

... decays of the X(3872) into γJ/ψ and γψ from an effective field theory point of view. We show that radiative decays are not sensitive to the long-range structure of the X(3872). In particular, contrary to earlier claims, we argue that the experimentally determined ratio of the mentioned branching fra ...
Wigner and Nambu–Goldstone Modes of Symmetries
Wigner and Nambu–Goldstone Modes of Symmetries

... symmetries in G/H are realized in the Nambu–Goldstone mode. In this case, all particle species — including the Goldstone particles — form degenerate multiplets of H but not of G. PS: By the Mermin–Wagner–Coleman Theorem, in d = 1 + 1 dimensions a continuous symmetry cannot be spontaneously broken be ...
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Document

... concentration range x = 0 to x = 12.3 % as before [2]. The fcc structure remains unchanged with x, the lattice constant increases by 1% for x = 15% [2]. The muon data were collected using the Dolly instrument at PSI, using several pellets of each composition wrapped in silver foil, at low temperatur ...
Gauge theories in two dimensions and quantum integrable systems.
Gauge theories in two dimensions and quantum integrable systems.

... Solutions can be viewed as the susy field configurations for the N=2 gauged linear sigma model ...
Coherent Exciton Dynamics in Semiconductor Superlattices:A Quasi
Coherent Exciton Dynamics in Semiconductor Superlattices:A Quasi

... Is there a photon position operator with commuting components and exactly localized eigenvectors? It has been claimed that since the early day of quantum mechanics that there is not. Surprisingly, we found a family of r operators, Hawton, Phys. Rev. A 59, 954 (1999). Hawton and Baylis, Phys. Rev. A ...
ANDRÉ PETERMANN by Antonino Zichichi
ANDRÉ PETERMANN by Antonino Zichichi

... Stueckelberg and Petermann discovered [1] that if the mass and the charge are made to be finite, they must run with energy. It remains the freedom to choose one’s renormalization subtraction points. Petermann and Stueckelberg proposed that this freedom had to obey the rules of an Invariance Group, w ...
Linear Collider - University of Victoria
Linear Collider - University of Victoria

... symmetry breaking and physics beyond the Standard Model that cannot be answered without a physics program at a Linear Collider overlapping that of the Large Hadron Collider. We therefore strongly recommend the expeditious construction of a Linear Collider as the next major international High Energy ...
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... the SDE resides in the need for a self-consistent truncation scheme, i.e., one that does not compromise the gauge-invariance of the quantities studied. These two methods are actively applied in all the areas which were covered by the workshop; in fact about half the attendees of QCD-TNT worked in co ...
Student Colloquium at WSU (Fall 2006) (ppt-format)
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... j  ˆE  ˆT j  0  E  ˆT , ˆ  ˆˆ , ˆ  ˆ 1 ...
LeCtURe Notes QUANTUM STATISTICAL FIELD THEORY
LeCtURe Notes QUANTUM STATISTICAL FIELD THEORY

... for all allowed values αi , αi0 and 0 < λ < 1. As a consequence, Φ cannot support a discontinuity in the interior of the range of its arguments. However, it can have a discontinuous derivative. This implies that the necessary and sufficient condition for the uniqueness of the equilibrium state is th ...
Spin in Physical Space, Internal Space, and Hilbert
Spin in Physical Space, Internal Space, and Hilbert

... This field theory description does not yet quite correspond to the picture of polyacetylene sketched in the previous section, because the breaking of translational symmetry (from x → x + a to x → x + 2a) has not appeared. We need not change the equations, however, we need only draw out their implica ...
Lecture notes
Lecture notes

... The research at Nikhef includes both accelerator based particle physics and astro-particle physics. A strategic plan, describing the research programmes at Nikhef can be found on the web, from: www.nikhef.nl/fileadmin/Doc/Docs & pdf/StrategicPlan.pdf . The accelerator physics research of Nikhef is c ...
TNFL03 - fallstudier inom flygtrafik och logistik Homework Set 1
TNFL03 - fallstudier inom flygtrafik och logistik Homework Set 1

... How? That brings us back to Feng’s rerun of the universe. “Having a particle out there theoretically just a little heavier than the Higgs boson, which interacts with it, is waving a red cape in front of the eyes of physicists,” Feng says. “There is a lot more data coming from CERN ahead that may rev ...
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Higgs mechanism

In the Standard Model of particle physics, the Higgs mechanism is essential to explain the generation mechanism of the property ""mass"" for gauge bosons. Without the Higgs mechanism, or some other effect like it, all bosons (a type of fundamental particle) would be massless, but measurements show that the W+, W−, and Z bosons actually have relatively large masses of around 80 GeV/c2. The Higgs field resolves this conundrum. The simplest description of the mechanism adds a quantum field (the Higgs field) that permeates all space, to the Standard Model. Below some extremely high temperature, the field causes spontaneous symmetry breaking during interactions. The breaking of symmetry triggers the Higgs mechanism, causing the bosons it interacts with to have mass. In the Standard Model, the phrase ""Higgs mechanism"" refers specifically to the generation of masses for the W±, and Z weak gauge bosons through electroweak symmetry breaking. The Large Hadron Collider at CERN announced results consistent with the Higgs particle on March 14, 2013, making it extremely likely that the field, or one like it, exists, and explaining how the Higgs mechanism takes place in nature.The mechanism was proposed in 1962 by Philip Warren Anderson, following work in the late 1950s on symmetry breaking in superconductivity and a 1960 paper by Yoichiro Nambu that discussed its application within particle physics. A theory able to finally explain mass generation without ""breaking"" gauge theory was published almost simultaneously by three independent groups in 1964: by Robert Brout and François Englert; by Peter Higgs; and by Gerald Guralnik, C. R. Hagen, and Tom Kibble. The Higgs mechanism is therefore also called the Brout–Englert–Higgs mechanism or Englert–Brout–Higgs–Guralnik–Hagen–Kibble mechanism, Anderson–Higgs mechanism, Anderson–Higgs-Kibble mechanism, Higgs–Kibble mechanism by Abdus Salam and ABEGHHK'tH mechanism [for Anderson, Brout, Englert, Guralnik, Hagen, Higgs, Kibble and 't Hooft] by Peter Higgs.On October 8, 2013, following the discovery at CERN's Large Hadron Collider of a new particle that appeared to be the long-sought Higgs boson predicted by the theory, it was announced that Peter Higgs and François Englert had been awarded the 2013 Nobel Prize in Physics (Englert's co-author Robert Brout had died in 2011 and the Nobel Prize is not usually awarded posthumously).
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