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Particle Physics
Particle Physics

... imaginary 3 vector and then O(3) transformation as the imaginary 3 dimensional rotation. Assume its Lagrangian is: ...
Slide 1 - s3.amazonaws.com
Slide 1 - s3.amazonaws.com

... Physicists were both mystified and intrigued by Bohr’s theory. They questioned why the energies of hydrogen electron are quantized, or, why is the electron in a Bohr atom restricted or orbiting the nucleus at certain fixed distance? For a decade there is no logical explanation. In 1924, Louis de Bro ...
Quantum Field Theory - Institut für Theoretische Physik
Quantum Field Theory - Institut für Theoretische Physik

... physics in the guise of critical behavior of statistical systems confined to surfaces. ...
Quantum gravity
Quantum gravity

Lorentz invariance
Lorentz invariance

Lecture6.QM.to.Lagrangian.Densities
Lecture6.QM.to.Lagrangian.Densities

... Just as there is no “derivation” of quantum mechanics from classical mechanics, there is no derivation of relativistic field theory from quantum mechanics. The “route” from one to the other is based on physically reasonable postulates and the imposition of Lorentz invariance and relativistic kinemat ...
Radiation and quantised orbits
Radiation and quantised orbits

... The problem here is that there are two distinct areas of physics. The classical one and the quantum mechanical one. What goes on in the atom is essentially quantum mechanical. The laws of classical physics simply do not fully explain what is going on there. Think of the electron in orbit, in a class ...
Physics with Negative Masses
Physics with Negative Masses

... It has exactly the form of the Hamiltonian in the conventional treatment. The difference lies in the definition of the vacuum and correspondingly in the matrix elements of ak and âk,.These annihilation and creation operators, reduce (augment resp.) the number of particles in mode k by one, while the ...
Document
Document

... the parameter that gives the infinitesimal change is a vector field. Hence these constraints must multiply a vector field, without using a metric. Thus these constraints are the components of a one form. It should also be invariant under ordinary gauge transformations, as they commute with differomo ...
Mathematical Tripos, Part III, 2009-2010
Mathematical Tripos, Part III, 2009-2010

... Scaling Limit of the Long-range Contact Process Sorting Networks and the Exclusion Process Birational Geometry in Positive Characteristic Cliques of Primes in Noetherian Rings Braid Groups Groups of Piecewise Linear Homeomorphisms of the Real Line Localization in Relativistic Quantum Theories Decohe ...
What is Entanglement? Entangled Fields Looking at Entangled
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Scalar Field Theories with Screening Mechanisms
Scalar Field Theories with Screening Mechanisms

... where G is Newtons constant and Mp is the Planck mass. GMc /Rc is the Newtonian potential, Mp /M is the ratio of the gravitational coupling to the scalar coupling and (ϕ∞ − ϕc )/M is the depth of the scalars potential well. If M ∼ Mp then this expression is just the ratio of the force of the scalar ...
Abstract
Abstract

bukalov02_en
bukalov02_en

Equilibrium and non-equilibrium dynamics in the quantum regime
Equilibrium and non-equilibrium dynamics in the quantum regime

... Landauer's principle is a central example of the connection of information theory and thermodynamics. However, several publications have discussed Landauer's principle and the second law of thermodynamics in the quantum regime and claimed their breaking. If true, these results would have powerful an ...
Line integrals
Line integrals

McGill String Cosmology Workshop April 2005
McGill String Cosmology Workshop April 2005

Special Issue on Lie Group Representation Theory, Coherent States,
Special Issue on Lie Group Representation Theory, Coherent States,

SOME STRANGE FEATURES OF THE GALILEI GROUP BARBARA GOŁUBOWSKA, VASYL
SOME STRANGE FEATURES OF THE GALILEI GROUP BARBARA GOŁUBOWSKA, VASYL

... Abstract. Discussed are certain strange properties of the Galilei group, connected first of all with the property of mechanical energy-momentum covector to be an affine object, rather than the linear one. Its affine transformation rule is interesting in itself and dependent on the particle mass. On ...
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Using Boolean Logic to Research Quantum Field Theory
Using Boolean Logic to Research Quantum Field Theory

... facts to explain QFT as a widely discussed subject in the field of science and mathematics itself. In comparison to other theories on the composition of out universe and matter itself, there is no conical definition for QFT. This has been quoted on the first paragraph of section one of the Stanford ...
The 1/N expansion method in quantum field theory
The 1/N expansion method in quantum field theory

Course Poster
Course Poster

... Website: www.math.umd.edu/~dio/courses/648M Instructor: Prof. Dio Margetis ([email protected], x 5-5455) FOCUS: Mathematical concepts and analytical tools used in classical mechanics as well as quantum mechanics and quantum field theories. Applications from: fluid mechanics, elasticity, electromagnet ...
Quantum mechanical model
Quantum mechanical model

Modeling Quantum Fields with Oscillators
Modeling Quantum Fields with Oscillators

... ...
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Scalar field theory

In theoretical physics, scalar field theory can refer to a classical or quantum theory of scalar fields. A scalar field is invariant under any Lorentz transformation.The only fundamental scalar quantum field that has been observed in nature is the Higgs field. However, scalar quantum fields feature in the effective field theory descriptions of many physical phenomena. An example is the pion, which is actually a pseudoscalar.Since they do not involve polarization complications, scalar fields are often the easiest to appreciate second quantization through. For this reason, scalar field theories are often used for purposes of introduction of novel concepts and techniques.The signature of the metric employed below is (+, −, −, −).
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