The God has created a man in order that he creates that the God fails to do



Monday 13 July 2015

My new article: Higher-stage Noether identities and second Noether theorems


My new article: G.Sardanashvily, Higher-stage Noether identities and second Noether theorems, Advances in Mathematical Physics, v 2015 (2015) 127481(#)

Abstract

The direct and inverse second Noether theorems are formulated in a general case of reducible degenerate Grassmann-graded Lagrangian theory of even and odd variables on graded bundles. Such Lagrangian theory is characterized by a hierarchy of non-trivial higher-stage Noether identities which is described in the homology terms. If a certain homology regularity conditions holds, one can associate to a reducible degenerate Lagrangian the exact Koszul – Tate chain complex possessing the boundary operator whose nilpotentness is equivalent to all complete non-trivial Noether and higher-stage Noether identities. The second Noether theorems associate to the above-mentioned Koszul--Tate complex a certain cochain sequence whose ascent operator consists of the gauge and higher-order gauge symmetries of a Lagrangian system. If gauge symmetries are algebraically closed, this operator is extended to the nilpotent BRST operator which brings the above mentioned cochain sequence into the BRST complex and provides a BRST extension of an original Lagrangian.



Friday 3 July 2015

Impact Factor 2014 of journals in Mathematical Physics



Impact Factor 2014 of the most authoritative journals in Mathematical Physics 
  
Journal Title
2014
2013
2012
2011
COMMUN MATH PHYS
2.086
1.901
1.971
1.941
LETT MATH PHYS
1.939
2.074
2.415
1.819
J PHYS A-MATH THEOR
1.583
1.687
1.766
1.564
REV MATH PHYS
1.329
1.448
1.092
1.213
J MATH PHYS
1.243
1.176
1.296
1.291