Is Physics in the Infinite Momentum Frame Independent of the Compactification Radius?
نویسندگان
چکیده
With the aim of clarifying the eleven dimensional content of Matrix theory, we examine the dependence of a theory in the infinite momentum frame (IMF) on the (purely spatial) longitudinal compactification radius R. It is shown that in a point particle theory the generic scattering amplitude becomes independent of R in the IMF. Processes with zero longitudinal momentum transfer are found to be exceptional. The same question is addressed in a theory with extended objects. A one-loop type II string amplitude is shown to be R-independent in the IMF, and to coincide with that of the uncompactified theory. No exceptional processes exist in this case. The possible implications of these results for M-theory are discussed. In particular, if amplitudes in M-theory are independent of R in the IMF, Matrix theory can be rightfully expected (in the N → ∞ limit) to describe uncompactified M-theory. PACS codes: 11.25.w, 11.25.Db, 11.80.m, 11.30.Cp
منابع مشابه
Is Physics in the Infinite Momentum Frame Independent of the Compactificaction Radius?
With the aim of clarifying the eleven dimensional content of Matrix theory, we examine the dependence of a theory in the infinite momentum frame (IMF) on the (purely spatial) longitudinal compactification radius R. First, by considering diagrams in scalar field theory, we argue that the generic scattering amplitude with total initial longitudinal momentum P = N/R in a point particle theory beco...
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