2024/12/11 by Hiroki Wada, Satoshi Yamaguchi, Wada, Hiroki +1
Computer Science · Dentistry · Earth and Planetary Sciences · #Dental Radiography and Imaging #FOS: Physical sciences #High Energy Physics - Theory (hep-th) #Medical Image Segmentation Techniques #Seismic Imaging and Inversion Techniques
paper · pdf · doi:10.48550/arxiv.2412.08056
openalex publication_date 2024/12/11 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
We consider D-branes in the Dabholkar-Park (DP) background, a 9d orientifold theory obtained by gauging symmetry in the type IIB string theory compactified on a circle. Using anomalies in the world-sheet theory, we provide physical insights into the classification of stable D-branes by relative KR-theory. The nature, such as stability, of D-branes wrapping along the compactified circle can be extracted from information about 1d Majorana fermions on the boundary of the world-sheet. These Majorana fermions need to be introduced to consistently perform the GSO projection and the orientifold. We also construct D-brane states in the DP background. The spectrum of D-branes characterized by the relative KR-theory is correctly reproduced from the D-brane states.