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Research program, TH Hansson
Research program, TH Hansson

... theoretically very interesting, but hard to find, and to study. Although it had been known for some time that ordinary, weakly coupled, BCS superconductors coupled to electromagnetism is an example of a topological statev, most researchers associated topological states primarily with the QH liquids. ...
Quantum Computing Lecture 3 Principles of Quantum Mechanics
Quantum Computing Lecture 3 Principles of Quantum Mechanics

A. A glowing red object is hotter than a glowing yellow
A. A glowing red object is hotter than a glowing yellow

... This spectrum could not be reproduced using 19th-century physics. All attempts were either purely descriptive (like Wien’s law), or led to the so called “ultraviolet catastrophe” - failure to derive the decline in flux at short wavelengths, leading to unrealistic prediction of limitless radiation in ...
Dr.Eman Zakaria Hegazy Quantum Mechanics and Statistical
Dr.Eman Zakaria Hegazy Quantum Mechanics and Statistical

The past decade has seen a substantial rejuvenation of interest in
The past decade has seen a substantial rejuvenation of interest in

... another perspective on the physics of an interacting many-body system. A traditional analysis of such a system would begin from either a weak-coupling Hamilt0nian, and then build in interactions among the nearly free excitations, or from a strong-coupling limit, where the local interactions are well ...
Time Evolution in Closed Quantum Systems
Time Evolution in Closed Quantum Systems

周正威
周正威

Axion-like particle production in a laser
Axion-like particle production in a laser

... The time η0 is defined such that Nk (η0 ) = 0. The quantum Vlasov equation, eq. (2), is formally similar to the one obtained by Kluger et al. [29] for bosonic pair production in flat spacetime under an oscillating electron field. However, in our case, it has been specialized such that there is no ex ...
Abstract
Abstract

... 2. How to realize quantum memory Proof-of-principle experiments were simultaneously performed by two groups [4,5], where a weak laser pulse was stored in an atomic ensemble and after a while the light pulse whose temporal waveform was similar to the original one was retrieved. These great demonstrat ...
Mixing Transformations in Quantum Field Theory and Neutrino
Mixing Transformations in Quantum Field Theory and Neutrino

7. BH thermodynamics. A step towards quantum gravity?
7. BH thermodynamics. A step towards quantum gravity?

Coordinate Noncommutativity, Quantum Groups and String Field
Coordinate Noncommutativity, Quantum Groups and String Field

Is a System`s Wave Function in One-to
Is a System`s Wave Function in One-to

... where each physical system possesses an individual set of (possibly hidden) elements of reality, which are the only quantities relevant for predicting the outcomes of later measurements. One of their assumptions then demands that it is possible to prepare multiple systems such that these sets are st ...
QNSR
QNSR

... The nature of these three volumes, a comparatively monumental undertaking in a field that extremely dynamic and full of different language constructs and interpretations, is somewhat encyclopedic. We are embarking here to provide a type of centenary revisiting of quantum and relativistic foundation ...
(Covariant) minimum length and cosmic expansion
(Covariant) minimum length and cosmic expansion

... • Sampling theory on curved space should be a useful mathematical tool in approaches to quantum gravity with discrete space: – Stabilizes dimension of the lattices – Problem of continuum “limit” replaced by an equivalence to the continuum theory. – Preserve external symmetries and associated conserv ...
LOYOLA COLLEGE (AUTONOMOUS), CHENNAI – 600 034
LOYOLA COLLEGE (AUTONOMOUS), CHENNAI – 600 034

... 13. Apply the Bose-Einstein statistics to photons and obtain Planck’s law for black body radiation. Hence obtain the Stefan-Boltzmann law. 14. Show that the specific heat of an ideal Fermi-Dirac gas is directly proportional to temperature when T << TF. 15. Calculate the energy fluctuation for a cano ...
Infinite 1-D Lattice II
Infinite 1-D Lattice II

Lieb-Robinson Bounds and the Speed of Light from
Lieb-Robinson Bounds and the Speed of Light from

... something is ‘‘happening’’ at all the intermediate points, then the interaction between the objects must propagate with a finite speed. Relativistic quantum mechanics is built by taking the locality principle as a central feature. In nonrelativistic quantum mechanics the situation is more subtle: si ...
Quantum Mechanics in 3
Quantum Mechanics in 3

AdS/CFT to hydrodynamics
AdS/CFT to hydrodynamics

The beginning of physics
The beginning of physics

...  Properties must explain why they haven’t been observed already (heavy, or weakly interacting). ...
Quantum Mechanics Lecture 5 Dr. Mauro Ferreira
Quantum Mechanics Lecture 5 Dr. Mauro Ferreira

الكيمياء الفيزيائية (3)
الكيمياء الفيزيائية (3)

Field theretical approach to gravity
Field theretical approach to gravity

The Excitement of Scattering Amplitudes
The Excitement of Scattering Amplitudes

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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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