BROWSE

Related Researcher

Author

Cho, Yongmin
School of Natural Science
Research Interests
  • Higher-dimensional Unified Field Theory

ITEM VIEW & DOWNLOAD

QCD effective action and stability of magnetic condensation

Cited 0 times inthomson ciCited 0 times inthomson ci
Title
QCD effective action and stability of magnetic condensation
Author
Cho, Yongmin
Keywords
YANG-MILLS THEORY; QUANTUM CHROMODYNAMICS; GAUGE-THEORY; VACUUM BEHAVIOR; SU(2) QCD; FIELDS; MONOPOLES; CONFINEMENT; SYMMETRY; STATE
Issue Date
201011
Publisher
ELSEVIER SCIENCE BV
Citation
NUCLEAR PHYSICS A, v.844, no., pp.120C - 137C
Abstract
We present two independent arguments to resolve the controversy on the stability of the magnetic condensation in QCD. We calculate the imaginary part of the one-loop effective action of SU(2) QCD in two different methods, and show that the gauge invariant calculation of the functional determinant assures the stability of the magnetic condensation. We confirm the stability calculating the imaginary part of the effective action perturbatively, with Fyenman diagram and Schwinger's method. We generalise this result to SU(3) QCD and show that, in the presence of chromomagnetic background, the real part of the effective action has true minimum only when (H) over right arrow (3) and (H) over right arrow (8) becomes orthogonal. Moreover, with the chromomagnetic background the effective action has no imaginary part, but with the chromoelectric background it acquires a negative imaginary part. This strongly indicates the existence of a stable monopole condensation in QCD.
URI
Go to Link
DOI
http://dx.doi.org/10.1016/j.nuclphysa.2010.05.023
ISSN
0375-9474
Appears in Collections:
ECE_Journal Papers

find_unist can give you direct access to the published full text of this article. (UNISTARs only)

Show full item record

qr_code

  • mendeley

    citeulike

Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.

MENU