17 papers
Worldsheet for Generalized Veneziano Amplitudes
Shota Komatsu, Pronobesh Maity
We present a worldsheet action that reproduces a class of dual resonance amplitudes discussed in the literature, which generalize the Veneziano amplitude for open strings. Our prop…
Time-Dependent Integrability from Gauge Theory, I
Shota Komatsu, Jun-ichi Sakamoto, Anders Wallberg +1
Solvable time-dependent systems provide important settings for studying non-equilibrium physics, where exact results are rare. They are also useful for benchmarking quantum simulat…
Crosscap Defects
Nadav Drukker, Shota Komatsu, Anders Wallberg
We introduce a novel class of defects, termed crosscap defects, in conformal field theory (CFT) in general dimensions. These arise from quotienting the spacetime by a automor…
Continuous Family of Conformal Field Theories and Exactly Marginal Operators
Shota Komatsu, Yuya Kusuki, Marco Meineri +1
Does a conformal manifold imply the existence of exactly marginal operators? We answer this question affirmatively under the assumption that there exists a conformal interface with…
Dressing and Screening in Anti-de Sitter
Ankur, Lorenzo Di Pietro, Victor Gorbenko +2
Motivated by a question of defining gauge-invariant observables in cosmology and by the close connection between perturbation theory in de Sitter (dS) and Anti-de Sitter (AdS), we…
Analyticity and Unitarity for Cosmological Correlators
Lorenzo Di Pietro, Victor Gorbenko, Shota Komatsu
We study the fundamentals of quantum field theory on a rigid de Sitter space. We show that the perturbative expansion of late-time correlation functions to all orders can be equiva…