Aspects of noncommutativity in Field and String theory and Closed String Tachyon Condensation (Record no. 48802)
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| 000 -LEADER | |
|---|---|
| fixed length control field | 02137nam a2200265Ia 4500 |
| 008 - FIXED-LENGTH DATA ELEMENTS--GENERAL INFORMATION | |
| fixed length control field | 160627s2005||||xx |||||||||||||| ||und|| |
| 080 ## - UNIVERSAL DECIMAL CLASSIFICATION NUMBER | |
| Universal Decimal Classification number | UNM TH-82 |
| 100 ## - MAIN ENTRY--AUTHOR NAME | |
| Personal name | Swarnendu, Sarkar |
| Relator term | author |
| 245 ## - TITLE STATEMENT | |
| Title | Aspects of noncommutativity in Field and String theory and Closed String Tachyon Condensation |
| 260 ## - PUBLICATION, DISTRIBUTION, ETC. (IMPRINT) | |
| Year of publication | 2005 |
| 300 ## - PHYSICAL DESCRIPTION | |
| Number of Pages | ix; 144p. |
| 502 ## - DISSERTATION NOTE | |
| Dissertation note | 2005 |
| 502 ## - DISSERTATION NOTE | |
| Degree Type | Ph.D |
| 502 ## - DISSERTATION NOTE | |
| Name of granting institution | University of Madras |
| 520 3# - SUMMARY, ETC. | |
| Summary, etc | This thesis studies two problems; The first part of the thesis analyses some of the aspects of noncommutativity in field and string theory; The mixing of the ultraviolet and the infrared sectors in noncommutative field theories and their interpretation in terms of open-closed string duality in string theory. And Localised closed string tachyon condensation is analysed in the second part. It is shown that the renormalisation conditions set at a particular momentum configuration with a fixed number of zero momenta, renormalises the Green's functions for any general momenta only when this configuration has same set of zero momenta. In the context of spontaneous symmetry breaking in noncommutative scalar theory, it is shown that the broken phase of the theory the Ward identities are satisfied to all orders only when one keeps an infrared regulator by shifting to a nonconstant vacuum. In the second part the condensation of closed string Tachyons is analysed on the C/ZN orbifold. The potential for the tachyons is constructed upto the quartic interaction term in the large N limit, where there exist near marginal tachyons. The quartic coupling for these tachyons is calculated by subtracting from the string theory amplitude for the tachyons, the contributions from the massless exchanges, computed from the effective field theory. |
| 650 14 - SUBJECT ADDED ENTRY--TOPICAL TERM | |
| Topical Term | Physics |
| 653 10 - INDEX TERM--UNCONTROLLED | |
| Uncontrolled term | Field Theory |
| 653 10 - INDEX TERM--UNCONTROLLED | |
| Uncontrolled term | Noncommutativity |
| 653 10 - INDEX TERM--UNCONTROLLED | |
| Uncontrolled term | String Theory |
| 653 10 - INDEX TERM--UNCONTROLLED | |
| Uncontrolled term | Tachyon Condensation |
| 720 1# - ADDED ENTRY--UNCONTROLLED NAME | |
| Thesis Advisor | Sathiapalan, Balachandran |
| Relator term | Thesis advisor [ths] |
| 856 ## - ELECTRONIC LOCATION AND ACCESS | |
| Uniform Resource Identifier | http://www.imsc.res.in/xmlui/handle/123456789/108 |
| 942 ## - ADDED ENTRY ELEMENTS (KOHA) | |
| Koha item type | THESIS & DISSERTATION |
| Withdrawn status | Lost status | Damaged status | Not for loan | Current library | Full call number | Accession Number | Uniform Resource Identifier | Koha item type |
|---|---|---|---|---|---|---|---|---|
| IMSc Library | UNM TH-82 | 56256 | http://www.imsc.res.in/xmlui/handle/123456789/108 | THESIS & DISSERTATION |