Higher loop effects in M(atrix) orbifolds

Ganor, Ori J. ; Gopakumar, Rajesh ; Ramgoolam, Sanjaye (1998) Higher loop effects in M(atrix) orbifolds Nuclear Physics - Section B: Particle Physics, Field Theory and Statistical Systems, Physical Mathematics, 511 (1-2). pp. 243-263. ISSN 0550-3213

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Official URL: http://linkinghub.elsevier.com/retrieve/pii/S05503...

Related URL: http://dx.doi.org/10.1016/S0550-3213(97)00654-8

Abstract

Scattering of zero-branes off the fixed point in R8/Z2 as described by a super-quantum mechanics with eight supercharges, displays some novel effects relevant to Matrix theory in non-compact backgrounds. The leading long distance behaviour of the moduli space metric receives no correction at one loop in Matrix theory, but does receive a correction at two loops. There are no contributions at higher loops. We explicitly calculate the 2-loop term, finding a non-zero result. We find a discrepancy with M(atrix) theory. Although the result has the right dependence on v and b for the scattering of zero-branes off the fixed point the factors of N do not match. We also discuss scattering in the orbifolds, R5/Z2 and R9/Z2 where we find the predicted fractional charges.

Item Type:Article
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ID Code:22380
Deposited On:23 Nov 2010 12:52
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