scholarly journals Dark aspects of massive spinor electrodynamics

2014 ◽  
Vol 2014 (07) ◽  
pp. 001-001 ◽  
Author(s):  
Edward J. Kim ◽  
Seyen Kouwn ◽  
Phillial Oh ◽  
Chan-Gyung Park
Keyword(s):  
Massive Spinor

Renormalized quantum stress–energy tensor for massive spinor fields around global monopoles

2020 ◽  
Vol 35 (11) ◽  
pp. 2050077
Author(s):  
Owen Pavel Fernández Piedra
Keyword(s):  
Spinor Field ◽  
Energy Conditions ◽  
Energy Tensor ◽  
Stress Energy Tensor ◽  
Spinor Fields ◽  
Characteristic Radius ◽  
Stress Energy ◽  
Massive Spinor ◽  
Global Monopoles ◽  
Tensor Formula

The renormalized quantum stress–energy tensor [Formula: see text] for a massive spinor field around global monopoles is constructed within the framework of Schwinger–DeWitt approximation, valid whenever the Compton length of the quantum field is much less than the characteristic radius of the curvature of the background geometry. The results obtained show that the quantum massive spinor field in the global monopole spacetime violates all the pointwise energy conditions.

Conformally invariant massive spinor equations. — I

1973 ◽  
Vol 18 (3) ◽  
pp. 495-510 ◽  
Author(s):  
A. O. Barut ◽  
R. B. Haugen
Keyword(s):  
Conformally Invariant ◽  
Massive Spinor

scholarly journals Classical and quantum double copy of back-reaction

2020 ◽  
Vol 2020 (9) ◽  
Author(s):  
Tim Adamo ◽  
Anton Ilderton
Keyword(s):  
Quantum Theory ◽  
Gauge Theory ◽  
Plane Wave ◽  
Tree Level ◽  
Back Reaction ◽  
Quantum Double ◽  
Four Dimensions ◽  
Helicity Formalism ◽  
Massive Spinor ◽  
Double Copy

Abstract We consider radiation emitted by colour-charged and massive particles crossing strong plane wave backgrounds in gauge theory and gravity. These backgrounds are treated exactly and non-perturbatively throughout. We compute the back-reaction on these fields from the radiation emitted by the probe particles: classically through background-coupled worldline theories, and at tree-level in the quantum theory through three-point amplitudes. Consistency of these two methods is established explicitly. We show that the gauge theory and gravity amplitudes are related by the double copy for amplitudes on plane wave backgrounds. Finally, we demonstrate that in four-dimensions these calculations can be carried out with a background-dressed version of the massive spinor-helicity formalism.

scholarly journals De Sitter scalar–spinor interaction in Minkowski limit

2020 ◽  
Vol 29 (13) ◽  
pp. 2050092
Author(s):  
Y. Ahmadi
Keyword(s):  
Scalar Field ◽  
Yukawa Potential ◽  
Ambient Space ◽  
De Sitter ◽  
Field Interaction ◽  
Spinor Fields ◽  
Sitter Spacetime ◽  
Massive Spinor ◽  
Space Formalism ◽  
Ordinary Derivative

The scalar–spinor interaction Lagrangian is presented by the Yukawa potential. In dS ambient space formalism, the interaction Lagrangian of scalar–spinor fields was obtained from a new transformation which is very similar to the gauge theory. The interaction of massless minimally coupled (mmc) scalar and spinor fields was investigated. The Minkowski limit of the mmc scalar field and massive spinor field interaction in the ambient space formalism of de Sitter spacetime is calculated. The interaction Lagrangian and mmc scalar field in the null curvature limit become zero and the local transformation in the null curvature limit become a constant phase transformation and the interaction in this limit become zero. The covariant derivative reduces to ordinary derivative too. Then, we conclude that this interaction is due to the curvature of spacetime and then the mmc scalar field may be a part of a gravitational field.

scholarly journals THE FINITE VACUUM ENERGY FOR SPINOR, SCALAR AND VECTOR FIELDS

1995 ◽  
Vol 10 (16) ◽  
pp. 2333-2347
Author(s):  
N.N. SHTYKOV
Keyword(s):  
Physical Model ◽  
Vector Fields ◽  
Vacuum Energy ◽  
Scalar Fields ◽  
Casimir Energy ◽  
Divergent Part ◽  
Scalar And Vector Fields ◽  
Massive Spinor ◽  
The One

We compute the one-loop potential (the Casimir energy) for scalar fields with coupling ξR and massive spinor and vector fields on the spaces Rm+1×Y with Y=SN, CP2. We find that in most of the models a divergent part of the Casimir energy on even-dimensional spaces is canceled by means of the appropriate values of ξ, msp, mv. As a physical model we consider spinor electrodynamics on four-dimensional product manifolds and show that the Casimir energy is finite on R1×S3, R3×S1 and R2×S2 for msp=0, msp=0 and [Formula: see text] respectively.

Sign in / Sign up

Export Citation Format

Share Document