Universe as a domain wall
- Department of Physics, University of Pennsylvania, Philadelphia, Pennsylvania 19104-6396 (United States)
- The Blackett Laboratory, Imperial College, London SW7 2BZ (United Kingdom)
- Department of Physics, Joseph Henry Laboratories, Princeton University, Princeton, New Jersey 08544 (United States)
It is shown that the effective five-dimensional theory of the strongly coupled heterotic string is a gauged version of N=1 five-dimensional supergravity with four-dimensional boundaries. For the universal supermultiplets, this theory is explicitly constructed by a generalized dimensional reduction procedure on a Calabi-Yau manifold. A crucial ingredient in the reduction is the retention of a {open_quotes}non-zero mode{close_quotes} of the four-form field strength, leading to the gauging of the universal hypermultiplet by the graviphoton. We show that this theory has an exact three-brane domain wall solution which reduces to Witten{close_quote}s {open_quotes}deformed{close_quotes} Calabi-Yau background upon linearization. This solution consists of two parallel three-branes with sources provided by the four-dimensional boundary theories and constitutes the appropriate background for a reduction to four dimensions. Four-dimensional space-time is then identified with the three-brane world volume. {copyright} {ital 1999} {ital The American Physical Society}
- OSTI ID:
- 335635
- Journal Information:
- Physical Review, D, Vol. 59, Issue 8; Other Information: PBD: Apr 1999
- Country of Publication:
- United States
- Language:
- English
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