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Intercollegiate Modules 2015/16
Intercollegiate Modules 2015/16

... Each course has a code number used by the Intercollegiate MSci board, shown at the left hand side. Colleges use local codes for the courses they teach. The number is usually the same as the MSci code, but some are different; beware! All courses are a half course unit (15 credits). In QMUL language, ...
PHYSICAL FOUNDATIONS OF COSMOLOGY - Assets
PHYSICAL FOUNDATIONS OF COSMOLOGY - Assets

Exact solutions of a Dirac equation with a varying CP
Exact solutions of a Dirac equation with a varying CP

... quasiparticle approximation (cQPA), an approximation scheme in finite temperature field theory that enables studying non-equilibrium phenomena. Using cQPA we show that in non-translation invariant systems the phase space of the Wightman function has in general structure beyond the traditional mass-s ...
PowerPoint
PowerPoint

... Why Quantum Field Theory So Successful Renormalization group by Wilson/Gell-Mann & Low Allow to deal with physical phenomena at any interesting energy scale by integrating out the physics at higher energy scales. Allow to define the renormalized theory at any interesting renormalization scale . ...
Educative Uncertainty: Heisenberg, Zizek and Hegel (1)
Educative Uncertainty: Heisenberg, Zizek and Hegel (1)

Renormalization group and the Planck scale
Renormalization group and the Planck scale

URL - StealthSkater
URL - StealthSkater

... mysticism. It assumes quite too much. In TGD framework, something new emerges already in CP2 scale about 104 longer than Planck scale. According to Nima, all this pain with Feynman diagrams would be due to the need to realize unitary representations of Poincare group in terms of fields. For massless ...
PX430: Gauge Theories for Particle Physics
PX430: Gauge Theories for Particle Physics

URL - StealthSkater
URL - StealthSkater

... different perspective than M-theory which is based on the Standard Model of particle physics. The so-called "Multiverse" turns out to be the TGD Universe.] This document summarizes this development up to last week’s (04/16/01) announcements. It is largely based and taken-in-context from Michio Kaku’ ...
Three Myths about Time Reversal in Quantum Theory
Three Myths about Time Reversal in Quantum Theory

The Family Problem: Extension of Standard Model with a
The Family Problem: Extension of Standard Model with a

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m H - Indico

Do we need the Concept of Particle?
Do we need the Concept of Particle?

... corpuscularian categories were still at work in the thought of many physicists, and in the fall of 1926 Heisenberg tried to show how they could be rescued somehow in the new theory. According to Heisenberg’s retrospective account in Physics and Beyond3, his “uncertainty relations” were aimed at achi ...
Monday, Apr. 18, 2005
Monday, Apr. 18, 2005

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Gluon fluctuations in vacuum
Gluon fluctuations in vacuum

... Dirac we ponder the question – what is the empty space, is there an aether? Einstein 1920: “But this aether may not be thought of as endowed with the quality characteristic of ponderable media, as consisting of parts which may be tracked through time. The idea of motion may not be applied to it.” ...
1 Analytic Representation of The Square
1 Analytic Representation of The Square

Calculating gg → tt + jets at Tree Level
Calculating gg → tt + jets at Tree Level

Conference booklet - XXXV Workshop on Geometric Methods in
Conference booklet - XXXV Workshop on Geometric Methods in

... Supergeometry of gauge PDE and AKSZ sigma models AKSZ sigma models were originally proposed to describe topological systems. In fact, an AKSZ model with finite number of fields and space-time dimension higher than 1 is necessarily topological. These models are quite distinguished in the sense that the ...
The Standard Model of Particle Physics: An - LAPTh
The Standard Model of Particle Physics: An - LAPTh

... W ± and the Z are massive. As pointed out above for QED, a mass term introduced by hand destroys the gauge invariance of the theory. This major hurdle was solved by borrowing and adapting an idea that is encountered in many solid-state physics phenomena. In such systems, the Hamiltonian is invariant ...
Family Gauge Theory
Family Gauge Theory

Classical canonical transformation theory as a tool to describe
Classical canonical transformation theory as a tool to describe

... current work have already been outlined in a previous publication,27 where we have proposed a new procedure for calculating the hopping probability. In fact, the key problems of multidimensional tunnelling delineated in the previous paragraphs have not been addressed in our previous paper while the ...
Notes on Semiclassical Gravity
Notes on Semiclassical Gravity

... the energy-momentum tensor can act as the source for a semiclassical, c-number, gravitational field. The basic issues can be understood from the study of the semiclassical limit of a toy model, consisting of two interacting particles, which mimics the essential properties of quantum general relativi ...
Spin Foam Models for Quantum Gravity
Spin Foam Models for Quantum Gravity

... looking at SU(2) gauge invariant functionals of the connection (L2 [A]/G). The fundamental gauge invariant quantity is given by the holonomy around closed loops. An orthonormal basis of the kernel of the Gauss constraint is defined by the so called spin network states Ψγ,{jℓ },{ιn } (A) [25, 26, 27] ...
Gravitational Field of Massive Point Particle in General Relativity
Gravitational Field of Massive Point Particle in General Relativity

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Canonical quantum gravity

In physics, canonical quantum gravity is an attempt to quantize the canonical formulation of general relativity (or canonical gravity). It is a Hamiltonian formulation of Einstein's general theory of relativity. The basic theory was outlined by Bryce DeWitt in a seminal 1967 paper, and based on earlier work by Peter G. Bergmann using the so-called canonical quantization techniques for constrained Hamiltonian systems invented by Paul Dirac. Dirac's approach allows the quantization of systems that include gauge symmetries using Hamiltonian techniques in a fixed gauge choice. Newer approaches based in part on the work of DeWitt and Dirac include the Hartle–Hawking state, Regge calculus, the Wheeler–DeWitt equation and loop quantum gravity.
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