scholarly journals Bivariate q -normal distribution for transition matrix elements in quantum many-body systems

2020 ◽  
Vol 2020 (9) ◽  
pp. 093101
Author(s):  
Manan Vyas ◽  
V K B Kota
Keyword(s):  
Normal Distribution ◽  
Transition Matrix ◽  
Matrix Elements ◽  
Many Body ◽  
Transition Matrix Elements ◽  
Many Body Systems

ON A SELECTION RULE FOR ELECTRIC TRANSITIONS IN AXIALLY-SYMMETRIC NUCLEI

2010 ◽  
Vol 19 (04) ◽  
pp. 685-691 ◽  
Author(s):  
A. DOBROWOLSKI ◽  
A. GÓŹDŹ ◽  
J. DUDEK
Keyword(s):  
Transition Matrix ◽  
Selection Rule ◽  
Wave Functions ◽  
Matrix Elements ◽  
Axially Symmetric ◽  
Many Body ◽  
Absolute Value ◽  
Angular Momenta ◽  
Abrupt Changes ◽  
Transition Matrix Elements

We consider many-body E-l transition matrix-elements between two nuclear states of different axially-symmetric deformations characterised by two different (mutually non-orthogonal) sets of single-particle wave-functions. Yet, when varying the deformations of the initial, final, or both these states one notices abrupt changes in the form of vanishing and possibly reappearance of the transition matrix elements calculated between the corresponding Slater determinants. The mechanism is explained in terms of the conservation of the |m| quantum number (absolute value of the projection of individual-nucleonic angular-momenta); consequences for the more general calculations of this type also without axial symmetry are discussed.

OPTICAL TRANSITIONS IN A PARABOLIC GaAs/Ga1-xAlxAs SUPERLATTICES

2001 ◽  
Vol 08 (03n04) ◽  
pp. 321-325
Author(s):  
ŞAKIR ERKOÇ ◽  
HATICE KÖKTEN
Keyword(s):  
Transition Matrix ◽  
Optical Transition ◽  
Matrix Elements ◽  
Electron States ◽  
Parabolic Potential ◽  
Consistent Field ◽  
Self Consistent ◽  
Self Consistent Field ◽  
Transition Matrix Elements ◽  
Scf Calculations

We have performed self-consistent field (SCF) calculations of the electronic structure of GaAs/Ga 1-x Al x As superlattices with parabolic potential profile within the effective mass theory. We have calculated the optical transition matrix elements involving transitions from the hole states to the electron states, and we have also computed the oscillator strength matrix elements for the transitions among the electron states.

scholarly journals Microscopic method for E0 transition matrix elements

2017 ◽  
Vol 95 (1) ◽  
Author(s):  
B. A. Brown ◽  
A. B. Garnsworthy ◽  
T. Kibédi ◽  
A. E. Stuchbery
Keyword(s):  
Transition Matrix ◽  
Matrix Elements ◽  
Microscopic Method ◽  
Transition Matrix Elements

Neutron and proton transition matrix elements and inelastic hadron scattering

1981 ◽  
Vol 103 (4-5) ◽  
pp. 255-258 ◽  
Author(s):  
A.M. Bernstein ◽  
V.R. Brown ◽  
V.A. Madsen
Keyword(s):  
Transition Matrix ◽  
Matrix Elements ◽  
Transition Matrix Elements

scholarly journals Floquet-state cooling

2019 ◽  
Vol 9 (1) ◽  
Author(s):  
Onno R. Diermann ◽  
Martin Holthaus
Keyword(s):  
Solid State ◽  
Ground State ◽  
Thermal Equilibrium ◽  
Transition Matrix ◽  
Fourier Spectrum ◽  
Dissipative System ◽  
Quasistationary State ◽  
Matrix Elements ◽  
Periodically Driven ◽  
Transition Matrix Elements

AbstractWe demonstrate that a periodically driven quantum system can adopt a quasistationary state which is effectively much colder than a thermal reservoir it is coupled to, in the sense that certain Floquet states of the driven-dissipative system can carry much higher population than the ground state of the corresponding undriven system in thermal equilibrium. This is made possible by a rich Fourier spectrum of the system’s Floquet transition matrix elements, the components of which are addressed individually by a suitably peaked reservoir density of states. The effect is expected to be important for driven solid-state systems interacting with a phonon bath predominantly at well-defined frequencies.

Controlling transition matrix elements and relaxation in a two-electron double quantum dot

2009 ◽  
Vol 79 (15) ◽  
Author(s):  
Carlos F. Destefani ◽  
Chris McDonald ◽  
Suren Sukiasyan ◽  
Thomas Brabec
Keyword(s):  
Quantum Dot ◽  
Transition Matrix ◽  
Double Quantum ◽  
Matrix Elements ◽  
Double Quantum Dot ◽  
Transition Matrix Elements
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