“School of Physics”
Back to Papers HomeBack to Papers of School of Physics
Paper IPM / P / 6894  


Abstract:  
We study the Penrose limit of ODp theory. There are two different PPwave limits of the theory. One of them is a ten dimensional PPwave and the other a four dimensional one. We observe the later one leads to an exactly solvable background for type II string theories where we have both NS and RR fields. The Penrose limit of different branes of string (Mtheory) in a nonzero B/E field (C field) is also studied. These backgrounds are conjectured to provide dual description of NCSYM, NCOS and OM theory. We see that under Sduality the subsector of NCSYM_{4} and NCOS_{4} which are dual to the corresponding string theory on PPwave coming from NCYM_{4} and NCOS_{4} map to each other for given null geodesic.
Download TeX format 

back to top 