Abstract
We demonstrate that string consistency in four spacetime dimensions leads to a spectrum of string states which satisfies the supertrace constraints Str 1=0 and Str M2 Λ at tree level, where Λ is the one-loop string cosmological constant. This result holds for a large class of string theories, including critical heterotic strings. For strings lacking spacetime supersymmetry, these supertrace constraints will be satisfied as a consequence of a hidden "misaligned supersymmetry" in the string spectrum. These results suggest a new intrinsically stringy mechanism whereby such supertrace constraints may be satisfied without phenomenologically unacceptable consequences.
Original language | English (US) |
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Pages (from-to) | 4767-4770 |
Number of pages | 4 |
Journal | Physical review letters |
Volume | 74 |
Issue number | 24 |
DOIs | |
State | Published - 1995 |
Externally published | Yes |
ASJC Scopus subject areas
- General Physics and Astronomy