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arXiv · hep-th/9705237

Investigating the BPS Spectrum of Non-Critical E_n Strings

J. A. Minahan·D. Nemeschansky·N. P. Warner
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Abstract

We use the effective action of the $E_n$ non-critical strings to study its BPS spectrum for $0 \le n \le 8$. We show how to introduce mass parameters, or Wilson lines, into the effective action, and then perform the appropriate asymptotic expansions that yield the BPS spectrum. The result is the $E_n$ character expansion of the spectrum, and is equivalent to performing the mirror map on a Calabi-Yau with up to nine Kähler moduli. This enables a much more detailed examination of the $E_n$ structure of the theory, and provides extensive checks on the effective action description of the non-critical string. We extract some universal ($E_n$ independent) information concerning the degeneracies of BPS excitations.

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J. A. Minahan, D. Nemeschansky, N. P. Warner. 1997-05-29. Investigating the BPS Spectrum of Non-Critical E_n Strings. https://doi.org/10.1016/s0550-3213(97)00527-0

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