摘要:

We discover the method to make invariants under the shift of noncommutative parameter. This proceeding is short summary of the paper [1] (hep-th/0107033) and for the 10th Tohwa International Symposium on String theory which was held in Fukuoka, July 2001. ©2002 American Institute of Physics.

ISSN:0094-243X    

DOI:10.1063/1.1454402

出版商:AIP    

年代:1902

数据来源: AIP

摘要:

We construct 1/8, 1/4, and 1/2 BPS solutions spanned by diagonal elements of U(N) constant fluxes in the6+1dimensional U(N) super Yang-Mills theory onT6with topological stability. These solutions represent BPS bound states of D0, D2, D4, and D6 branes. The consistency with the D-brane charge conservation implies that unstable D0-D2-D6-brane systems in a B field decay to the BPS solutions, in which lower dimensional D-branes are dissolved in D6-branes. ©2002 American Institute of Physics.

ISSN:0094-243X    

DOI:10.1063/1.1454403

出版商:AIP    

年代:1902

数据来源: AIP

摘要:

We study Matrix theory in the large-Nlimit by generalizing the AdS/CFT correspondence to the case of D0-branes. We obtain 2-point functions of Matrix theory from supergravity. Analyzing the large-Nscaling behavior of the operators, we discuss the 11-dimensional boost symmetry of Matrix theory. This presentation is based on [1] and [2]. ©2002 American Institute of Physics.

ISSN:0094-243X    

DOI:10.1063/1.1454404

出版商:AIP    

年代:1902

数据来源: AIP

摘要:

We comment on the AdS/CFT aspects in the brane-world. Based on this we show that the bulk spacetimes evolve to the warped geometries like the anti-de Sitter spacetime [1]. ©2002 American Institute of Physics.

ISSN:0094-243X    

DOI:10.1063/1.1454405

出版商:AIP    

年代:1902

数据来源: AIP

摘要:

The stability of the shell of wrapped D6-branes on K3 is investigated from the point of view of supergravity. We first construct an effective energy-momentum tensor for the shell under the reasonable conditions and show that supersymmetric solutions satisfy Israel’s junction conditions at arbitrary radius of the shell. Next we study the perturbation of the whole system including the self-gravity of the shell. It is found that in spite of the existence of wrapped D6-branes with negative tension, there is no eigenmode whose frequencies of the shell and the fields are imaginary numbers, at any radius of the shell. Furthermore, when the radius of the shell is less than the enhanc¸on radius, resonances are produced, and this indicates a kind of “instability” of the system. This can even classically explain why the shell is constructed at the enhanc¸on radius. ©2002 American Institute of Physics.

ISSN:0094-243X    

DOI:10.1063/1.1454406

出版商:AIP    

年代:1902

数据来源: AIP

摘要:

We give the boundary string field theory description of brane-antibrane systems. We obtain its tachyon potential, worldvolume action including gauge fields and RR-coupling which is written by “superconnection”. Some of these results are exact. ©2002 American Institute of Physics.

ISSN:0094-243X    

DOI:10.1063/1.1454407

出版商:AIP    

年代:1902

数据来源: AIP

摘要:

We investigate features of strong coupling dynamics of softly broken supersymmetricN=1SU(Nc)QCD in four dimensions using M theory. By dealing with the full M5 brane configuration we gain new insights into Seiberg Duality and condensation of flavored magnetic monopoles. From the point of view of M theory, these gauge theory properties are related to brane bending and brane intersections. ©2002 American Institute of Physics.

ISSN:0094-243X    

DOI:10.1063/1.1454408

出版商:AIP    

年代:1902

数据来源: AIP

摘要:

We develop a systematic DLCQ perturbation in scalar field theory and establish the Feynman rules. From the Feynman rules, we discuss the relationship between conventional DLCQ and DLCQ as a light-like limit(L3)in field and string theories. ©2002 American Institute of Physics.

ISSN:0094-243X    

DOI:10.1063/1.1454409

出版商:AIP    

年代:1902

数据来源: AIP