ISSN:0015-8208    

DOI:10.1002/prop.2190311102

出版商:WILEY‐VCH Verlag    

年代:1983

数据来源: WILEY

摘要:

AbstractThe experimental consequences of the asymptotically freeSU(5)‐theory are presented which make it possible to judge about its reliability. The phenomenology of the τ‐lepton is analysed with special attention paid to the so‐called exotic processes which must solve whether “light” or “heavy” the ντ‐neutrino should be. These exotic processes are completely forbidden within standardSU(5) schemes. The problem of the finite mass of the e, μ‐neutrino which is a four‐component Dirac spinor interacting via the Zel'dovitch‐Mahmound‐Konopinski scheme is discussed. The finiteness of such neutrino mass is a peculiarity of theSU(5) theory under discussion, although its value is not fixed here in a unique way. The version of the theory whereinmν≦ 10−3eV is of especial interest since in this case the proton instability and the finite e, μ‐neutrino mass are found to be explained in a common way as manifestations of the existence of superheavy leptoquark bosons in the theory. The possibility is pointed out to explain within theSU(5) theory under consideration the existing experimental situations concerning the search for parity violating effects in atoms. It is shown that the presentSU(5) theory encounters no difficulty in this respect and can recommend itself to any experimental set of data, whereas the standard schemes ofSU(5) unification cannot. Cosmological consequences of the asymptotically freeSU(5) theory are briefly discussed and the latter is found to rather reasonably explain a number of facts about the v

ISSN:0015-8208    

DOI:10.1002/prop.2190311103

出版商:WILEY‐VCH Verlag    

年代:1983

数据来源: WILEY

摘要:

AbstractA non‐perturbative approach is developed for investigation of the infrared problem in QCD atT≠ 0 in the ghost‐free axial gauge. The problem is solved by using a 3‐dimensional theory within the exact Slavnov‐Taylor identities and Schwinger‐Dyson equations. The system of two non‐linear integral equations for the structural functions of the gluon polarization tensor is obtained whose solution determines the infrared behavior of the temperature Green functions in the 4‐dimensional QCD. The simplest solution of these equations which is the same as the first term of the perturbation expansion shows the presence of singularities in the gluon propagator at momentap∼g2T, that cannot be eliminated by any choice of the gauge. The infrared instability of QCD atT≠ 0 caused by these singula

ISSN:0015-8208    

DOI:10.1002/prop.2190311104

出版商:WILEY‐VCH Verlag    

年代:1983

数据来源: WILEY

ISSN:0015-8208    

DOI:10.1002/prop.2190311101

出版商:WILEY‐VCH Verlag    

年代:1983

数据来源: WILEY