TY - JOUR
T1 - N = 2 heterotic strings revisited
AU - Giveon, Amit
AU - Hashimoto, Akikazu
AU - Kutasov, David
N1 - Publisher Copyright:
© The Author(s) 2025.
PY - 2025/4
Y1 - 2025/4
N2 - We show that 1 + 1 dimensional vacua of the (0, 2) heterotic string have many properties in common with more recently studied physical systems. The free theory exhibits a symmetric product CFT structure. The single-string Hilbert space splits into sectors labeled by the string winding, w, that contain purely left-moving (for w > 0) and right-moving (for w < 0) excitations. These sectors exhibit infinite-dimensional left and right-moving symmetry algebras, respectively, with central extensions that depend on w. String interactions between left and right-movers appear to lead to a TT¯ deformation of the free theory.
AB - We show that 1 + 1 dimensional vacua of the (0, 2) heterotic string have many properties in common with more recently studied physical systems. The free theory exhibits a symmetric product CFT structure. The single-string Hilbert space splits into sectors labeled by the string winding, w, that contain purely left-moving (for w > 0) and right-moving (for w < 0) excitations. These sectors exhibit infinite-dimensional left and right-moving symmetry algebras, respectively, with central extensions that depend on w. String interactions between left and right-movers appear to lead to a TT¯ deformation of the free theory.
KW - Conformal Field Models in String Theory
KW - Superstrings and Heterotic Strings
UR - http://www.scopus.com/inward/record.url?scp=105002081466&partnerID=8YFLogxK
U2 - 10.1007/JHEP04(2025)006
DO - 10.1007/JHEP04(2025)006
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AN - SCOPUS:105002081466
SN - 1126-6708
VL - 2025
JO - Journal of High Energy Physics
JF - Journal of High Energy Physics
IS - 4
M1 - 6
ER -