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Twistorial Topological Strings and a tt* Geometry for N=2 Theories in 4d
Sergio Cecotti, Andrew Neitzke, Cumrun Vafa
We define twistorial topological strings by considering tt* geometry of the 4d N=2 supersymmetric theories on the Nekrasov-Shatashvili half-Omega background, which leads to quantiz…
Strings of Minimal 6d SCFTs
Babak Haghighat, Albrecht Klemm, Guglielmo Lockhart +1
We study strings associated with minimal 6d SCFTs, which by definition have only one string charge and no Higgs branch. These theories are labelled by a number n with 1 <= n <= 8 o…
Elliptic Genus of E-strings
Joonho Kim, Seok Kim, Kimyeong Lee +2
We study a family of 2d N=(0,4) gauge theories which describes at low energy the dynamics of E-strings, the M2-branes suspended between a pair of M5 and M9 branes. The gauge theory…
Non-Unitary Holography
Cumrun Vafa
We propose gauge theory/gravity duality involving conformal theories based on U(N+k|k) gauge groups. We show that to all orders in 1/N these non-unitary theories based on supergrou…
6d Conformal Matter
Michele Del Zotto, Jonathan J. Heckman, Alessandro Tomasiello +1
A single M5-brane probing G, an ADE-type singularity, leads to a system which has G x G global symmetry and can be viewed as "bifundamental" (G,G) matter. For the A_N series, this…
E + E H
Babak Haghighat, Guglielmo Lockhart, Cumrun Vafa
E-strings arise from M2 branes suspended between an M5 brane and an M9 plane. In this paper we obtain explicit expressions for the elliptic genus of two E-strings using a series of…