Tensionless Limit of Pure-Ramond-Ramond Strings and AdS_{3}/CFT_{2}

Area of Science:

• String theory
• Quantum field theory
• AdS/CFT correspondence

Background:

• AdS/CFT correspondence has advanced, but Ramond-Ramond (RR) backgrounds, particularly the D1-D5 brane system, remain less understood.
• Understanding RR backgrounds is crucial for a complete picture of string theory dualities.

Purpose of the Study:

• To investigate the spectrum of pure Ramond-Ramond AdS3×S3×T4 strings.
• To clarify the role of world-sheet excitations in anomalous dimensions within these backgrounds.

Main Methods:

• Utilizing the recently developed mirror thermodynamic Bethe ansatz (TBA) equations.
• Analyzing the leading-order contribution to anomalous dimensions at small tension.

Main Results:

• The leading-order anomalous dimensions are primarily determined by gapless world-sheet excitations.
• Interactions of T4 bosons and their superpartners contribute non-trivially to these dimensions.

Conclusions:

• Gapless excitations play a key role in understanding the dynamics of RR AdS3×S3×T4 strings.
• The mirror TBA provides a powerful tool for studying such complex string theory setups.