Plane Wave Solutions With Dynamical Behaviors for Heisenberg Model of Ferromagnetic Spin Chain With Beta Derivative Evolution and Obliqueness

2021 ◽  
Author(s):  
M. F. Uddin ◽  
Md. Golam Hafez ◽  
S. A. Iqbal
Keyword(s):  
Plane Wave ◽  
Spin Chain ◽  
Heisenberg Model ◽  
Dynamical Behaviors ◽  
Wave Solutions

scholarly journals On Plane Wave Solutions in Lorentz-Violating Extensions of Gravity

Galaxies ◽  
2021 ◽  
Vol 9 (2) ◽  
pp. 32
Author(s):  
J. R. Nascimento ◽  
A. Yu. Petrov ◽  
A. R. Vieira
Keyword(s):  
Plane Wave ◽  
Dispersion Relations ◽  
Wave Solutions ◽  
Higher Derivatives ◽  
Additive Term

In this paper, we obtain dispersion relations corresponding to plane wave solutions in Lorentz-breaking extensions of gravity with dimension 3, 4, 5 and 6 operators. We demonstrate that these dispersion relations display a usual Lorentz-invariant mode when the corresponding additive term involves higher derivatives.

scholarly journals THE TACHYON FIELD BELOW THE MASS BARRIER

1994 ◽  
Vol 09 (20) ◽  
pp. 3497-3502 ◽  
Author(s):  
D.G. BARCI ◽  
C.G. BOLLINI ◽  
M.C. ROCCA
Keyword(s):  
Green Function ◽  
Eigenvalue Problem ◽  
Plane Wave ◽  
Time Evolution ◽  
Mass Parameter ◽  
Vacuum Expectation ◽  
Vacuum Expectation Value ◽  
Tachyon Field ◽  
Expectation Value ◽  
Wave Solutions

We consider a tachyon field whose Fourier components correspond to spatial momenta with modulus smaller than the mass parameter. The plane wave solutions have then a time evolution which is a real exponential. The field is quantized and the solution of the eigenvalue problem for the Hamiltonian leads to the evaluation of the vacuum expectation value of products of field operators. The propagator turns out to be half-advanced and half-retarded. This completes the proof4 that the total propagator is the Wheeler Green function.4,7

Exact plane‐wave solutions of the coupled Maxwell–Klein–Gordon equations

1990 ◽  
Vol 31 (12) ◽  
pp. 2917-2920 ◽  
Author(s):  
A. Das ◽  
T. Biech ◽  
D. Kay
Keyword(s):  
Plane Wave ◽  
Wave Solutions ◽  
Klein Gordon
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