We review applications of string theory to cosmology, from primordial times to the present-
day accelerated expansion. Starting with a brief overview of cosmology and string …

A general classification of flavor symmetries is provided according to their interplay with the
proper Poincaré and gauge groups and to their linear or nonlinear action in field space. The …

A bstract It was recently argued that string theory on AdS 3× S 3× 𝕋 4 with one unit (k= 1) of
NS-NS flux is exactly dual to the symmetric orbifold CFT Sym N (𝕋 4). In this paper we show …

A bstract In this paper we discuss gauging noninvertible zero-form symmetries in two
dimensions. We specialize to certain gaugeable cases, specifically, fusion categories of the …

We study the lepton flavor models, whose flavor symmetries are finite subgroups of the
modular group such as S 3 and A 4. In our models, couplings are also nontrivial …

We explore a new class of supersymmetric models for lepton masses and mixing angles
where the role of flavour symmetry is played by modular invariance. The building blocks are …

We review the conformal field theory approach to entanglement entropy in 1+ 1 dimensions.
We show how to apply these methods to the calculation of the entanglement entropy of a …

Abstract Foreword; Preface; Notation; 10. Type I and type II superstrings; 11. The heterotic
string; 12. Superstring interactions; 13. D-branes; 14. Strings at strong coupling; 15 …

String Theory comprises two volumes which give a comprehensive and pedagogic account
of the subject. Volume 1, first published in 1998, provides a thorough introduction to the …

Presenting the physics of the most challenging problems in condensed matter using the
conceptual framework of quantum field theory, this book is of great interest to physicists in …