Universidad Complutense de Madrid
E-Prints Complutense

Gauge-fixing independence of IR divergences in non commutative U(1), perturbative tachyonic instabilities and supersymmetry

Impacto

Downloads

Downloads per month over past year

Ruiz Ruiz, Fernando (2001) Gauge-fixing independence of IR divergences in non commutative U(1), perturbative tachyonic instabilities and supersymmetry. Physics Letters B, 502 . pp. 274-278. ISSN 0370-2693

[img] PDF
Restringido a Repository staff only hasta 31 December 2020.

67kB
[img]
Preview
PDF
108kB

Official URL: http://dx.doi.org/10.1016/S0370-2693(01)00145-9




Abstract

It is argued that the quadratic and linear non-commutative IR divergences that occur in U(1) theory on non-commutative Minkowski space-time for small non-commutativity matrices theta (mu nu) are gauge-fixing independent. This implies in particular that the perturbative tachyonic instability produced by the quadratic divergences of this type in the vacuum polarization tensor is not a gauge-fixing artifact. Supersymmetry can be introduced to remove from the renormalized Green functions at one loop, not only the non logarithmic non commutative IR divergences, but also all terms proportional to theta (mu nu)p(nu).


Item Type:Article
Additional Information:

© 2001 Published by Elsevier Science B.V.
The author is grateful C.P. Martín for many conversations and discussions, and to CICyT, Spain, for financial support through grant No. PB98-0842.

Uncontrolled Keywords:R-4
Subjects:Sciences > Physics
ID Code:25134
Deposited On:24 Apr 2014 17:55
Last Modified:24 Apr 2014 17:55

Origin of downloads

Repository Staff Only: item control page