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dynamical brane creation and annihilation via a background flux

Science China(Physics,Mechanics & Astronomy) 2022年第2期65卷 24-29页

作者： Yi-Fei Chen Jian-Xin Lu Interdisciplinary Center for Theoretical Study University of Science and Technology of ChinaPeng Huanwu Center for Fundamental TheoryHefei 230026China

We study the dynamical Myers effect by allowing the fuzzy(or the dynamical dielectric brane)coordinates to be time *** find three novel kinds of the dynamical spherical dielectric branes depending on their respective excess *** first represents a dynamical spherical brane carrying a negative excess energy(having a lower bound)with its radius oscillating periodically between two given non-zero *** second is the one with zero excess energy and whose time dependence can be expressed in terms of a simple *** particular dynamical spherical configuration represents the dielectric brane creation and/or annihilation like a photon in the presence of a background creating an electron-position pair and then annihilating back to a *** third is the one carrying positive excess energy and the radius can also oscillate periodically between two non-zero values but,unlike the first kind,it passes zero twice for each *** of the above can also be interpreted as the time evolution of a semi-spherical d-brane–anti semi-spherical d-brane system.

关键词： dynamical Myers effect d-branes string/M-theory

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Beijing Lectures on the Grade Restriction Rule

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Chinese Annals of Mathematics,Series B 2017年第4期38卷 901-912页

作者： Richard EAGER Kentaro HORI Johanna KNAPP Mauricio ROMO Kavli Institute for the Physics and Mathematics of the Universe Todai Institutes for Advanced S-tudyUniversity of TokyoKashiwa 277-8583Japan Mathematical Institute Heidelberg UniversityMATHEMATIKONIm Neuenheim Feld 20569120 HeidelbergGermany. Institute for Theoretical Physics TU WienWiedner Hauptstrasse 8-101040 ViennaAustria School of Natural Sciences Institute for Advanced StudyPrincetonNJ 08540USA

The authors describe the relationships between categories of B-branes in dif- ferent phases of the non-Abelian gauged linear sigma model. The relationship is described explicitly for the model proposed by Hori and Tong with non-Abelian gauge group that connects two non-birational Calabi-Yau varieties studied by Rcdland. A grade restriction rule for this model is derived using the hemisphere partition function and it is used to map B-type d-branes between the two Calabi-Yau varieties.

关键词： Gauged linear sigma model Non-birational Calabi-Yau manifolds d-branes Equivalences of categories

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