Fermionic string theories with deformed dispersion relations

2019 ◽  
Vol 100 (12) ◽  
Author(s):  
Hocine Randji ◽  
Nadir Belaloui
Keyword(s):  
Dispersion Relations ◽  
Fermionic String ◽  
String Theories

FOUR DIMENSIONAL FERMIONIC STRING THEORIES AND SYMMETRIC ORBIFOLDS

1990 ◽  
Vol 05 (05) ◽  
pp. 939-958 ◽  
Author(s):  
DAVID BAILIN ◽  
DAVID C. DUNBAR ◽  
ALEX LOVE
Keyword(s):  
Degrees Of Freedom ◽  
Bosonic String ◽  
Free Fermion ◽  
Free Fermions ◽  
Fermionic String ◽  
Internal Degrees Of Freedom ◽  
Simple Models ◽  
String Theories

Aspects of the connection between the free fermion formulation of four dimensional string theories and orbifolds are explored, and the ideas are illustrated by reference to simple models obtained by realizing the internal degrees of freedom of a bosonic string as free fermions.

scholarly journals ABCD of ’t Hooft operators

2021 ◽  
Vol 2021 (4) ◽  
Author(s):  
Hirotaka Hayashi ◽  
Takuya Okuda ◽  
Yutaka Yoshida
Keyword(s):  
Quantum Mechanics ◽  
Gauge Theories ◽  
Supersymmetric Quantum Mechanics ◽  
Type Ii ◽  
Expectation Values ◽  
String Theories

Abstract We compute by supersymmetric localization the expectation values of half-BPS ’t Hooft line operators in $$ \mathcal{N} $$ N = 2 U(N ), SO(N ) and USp(N ) gauge theories on S1 × ℝ3 with an Ω-deformation. We evaluate the non-perturbative contributions due to monopole screening by calculating the supersymmetric indices of the corresponding supersymmetric quantum mechanics, which we obtain by realizing the gauge theories and the ’t Hooft operators using branes and orientifolds in type II string theories.

Observation of the dispersion relations for quantized coherent spin waves excited by a microwave antenna

2020 ◽  
Vol 102 (21) ◽  
Author(s):  
Yoichi Shiota ◽  
Ryusuke Hisatomi ◽  
Takahiro Moriyama ◽  
Teruo Ono
Keyword(s):  
Spin Waves ◽  
Dispersion Relations ◽  
Microwave Antenna ◽  
Coherent Spin

scholarly journals GENERALIZED W3-STRINGS FROM FREE FIELDS

1995 ◽  
Vol 10 (06) ◽  
pp. 515-524 ◽  
Author(s):  
J. M. FIGUEROA-O'FARRILL ◽  
C. M. HULL ◽  
L. PALACIOS ◽  
E. RAMOS
Keyword(s):  
Bosonic Strings ◽  
Free Field ◽  
Space Time ◽  
General Construction ◽  
Special Cases ◽  
Free Fields ◽  
Rule Out ◽  
General Conditions ◽  
String Theories

The conventional quantization of w3-strings gives theories which are equivalent to special cases of bosonic strings. We explore whether a more general quantization can lead to new generalized W3-string theories by seeking to construct quantum BRST charges directly without requiring the existence of a quantum W3-algebra. We study W3-like strings with a direct space-time interpretation — that is, with matter given by explicit free field realizations. Special emphasis is placed on the attempt to construct a quantum W-string associated with the magic realizations of the classical w3-algebra. We give the general conditions for the existence of W3-like strings, and comment on how the known results fit into our general construction. Our results are negative: we find no new consistent string theories, and in particular rule out the possibility of critical strings based on the magic realizations.

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 Dispersion relations for some photon reactions

1960 ◽  
Vol 18 (4) ◽  
pp. 806-812
Author(s):  
A. Minguzzi ◽  
R. F. Streater
Keyword(s):  
Dispersion Relations
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