Penrose limits of I-branes, twist-compactified D5-branes, and spin chains
Marcelo Barbosa, Horaƫiu Năstase, Carlos Núñez, Ricardo Stuardo
Abstract
In this paper we consider the Penrose limit in the case of two gravity duals. One of them, consists of compactified I-branes [intersecting sets of D5-branes over ( <a:math xmlns:a="http://www.w3.org/1998/Math/MathML" display="inline"> <a:mrow> <a:mn>1</a:mn> <a:mo>+</a:mo> <a:mn>1</a:mn> </a:mrow> </a:math> ) dimensions]. The second consists of D5-branes compactified on a circle. Both compactifications preserve supersymmetry. We find a match of the oscillators and masses of string modes on the resulting pp wave against a spin chain in a ( <c:math xmlns:c="http://www.w3.org/1998/Math/MathML" display="inline"> <c:mrow> <c:mn>2</c:mn> <c:mo>+</c:mo> <c:mn>1</c:mn> </c:mrow> </c:math> )-dimensional field theory in the first case, and a spin chain in a ( <e:math xmlns:e="http://www.w3.org/1998/Math/MathML" display="inline"> <e:mrow> <e:mn>1</e:mn> <e:mo>+</e:mo> <e:mn>1</e:mn> </e:mrow> </e:math> )-dimensional field theory in the second. Published by the American Physical Society 2024