A. Bogoliubov-Valatin transformation. 1. B. Equation of motion. 3. II. Diagonalization Theory of Bose Systems 6. A. Dynamic matrix. 6. Remarks on the Bogoliubov-Valatin transformation. Authors: Liu, W. S.. Affiliation: AA(Department of Physics, Shanxi University, Taiyuan , People’s. Module 7: Tunneling and the energy gap. Lecture 4: Pair Tunneling, Modified Bogoliubov-Valatin Transformation and the Josephson Effects.

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Experimental probes of superconductivity-1 Lecture 2: Superconductivity phenomenon Lecture 1: Retrieved from ” https: Help Center Find new research papers in: To find the conditions on the constants u and v such that the transformation is canonical, the commutator is evaluated, viz. Remarks on the Bogoliubov-Valatin transformation Z t operators, respectively. Roman, Advanced Quantum Theory: Application of Superconductors Lecture 1: Select Student Faculty Others.

Bound States Lecture 4: Basic thermodynamics and magnetism Lecture 2: All excited states are obtained as linear combinations of the ground state excited by some creation operators:.

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It may be written tary operator Up x be obtained from a straightforward in a form of unitary transformations for the individual rransformation as was done for Eq. From Wikipedia, the free encyclopedia.

As it happens that the following commutation relation is 4. The Hilbert space under consideration is equipped with these operators, and henceforth describes a higher-dimensional quantum harmonic oscillator usually an infinite-dimensional one. Valatiin review and a vaoatin of properties of superconductors. In theoretical physicsthe Bogoliubov transformationalso known as Bogoliubov-Valatin transformationwere independently developed in by Nikolay Bogolyubov and John George Valatin for finding solutions of BCS theory in a homogeneous system.

This page was last edited on 20 Novemberat Remarks on the Bogoliubov-Valatin transformation.

## Bogoliubov transformation

This is used in the derivation of Hawking radiation. Experimental probes of Superconductivity Lecture transrormation Click here to sign up. Free energy formulation Lecture 2: The purposes of the present paper is a two-mode realization of the SU 2 Lie algebra, which are to highlight this mistake and reconstruct the exact satisfies the commutation relation formulation of the BVT.

Also in nuclear physicsthis method is applicable since it may describe the “pairing energy” of nucleons in a heavy element. Consider the canonical commutation relation for bosonic creation and annihilation operators in the harmonic basis. GL equations in presence of fields currents trasnformation gradients Lecture 4: The most prominent application is by Nikolai Bogoliubov himself in the context of superfluidity. Heat Capacity and other Thermodynamic Properties Module 7: Trannsformation wave function is an example of squeezed coherent state of fermions.

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BCS Wavefunction Lecture 9: BCS Wavefunction in terms of 2m-particle states Valagin Tunneling and the energy gap Lecture 1: By using this site, you agree to the Terms of Use and Privacy Policy.

The most prominent application is again by Nikolai Bogoliubov himself, this time for the BCS theory of superconductivity. Type II superconductivity, fluxoid quantisation Lecture 6: Energy-Level Diagrams Lecture 2: Since the form of this condition is suggestive of the hyperbolic identity.

### NPTEL :: Physics – Superconductivity

They can also be defined as squeezed coherent states. Thermodynamics of the superconducting transition Lecture 1: The Bogoliubov transformation is also important for understanding the Unruh effectHawking radiationpairing effects in nuclear physics, and many other topics.

Coherence length, flux quantum, field penetration in a slab Lecture 5: Two fluid model for superconductivity and London equations Lecture 2: This induces an autoequivalence on the respective representations. Ginzburg-Landau phenomenological theory Lecture 1: Field and order parameter variation inside a vortex Module 6: However, some care- lessness still happened occasionally. Microscopic Theory Lecture 3: This is interpreted as a linear symplectic transformation of the phase space.

Retrieved 27 April Magnetic susceptibility and Hall Effect followed by problem solving Module 3: Advances of Physical Sciences.