Meson widths from string worldsheet instantons
We show that open strings living on a D-brane which lies outside an AdS black hole We show that open strings living on a D-brane which lies outside an AdS black hole can tunnel into the black hole through worldsheet instantons. These instantons have a simple interpretation in terms of thermal quarks...
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| Format: | Article |
| Language: | en_US |
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Elsevier
2010
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| Online Access: | http://hdl.handle.net/1721.1/52695 https://orcid.org/0000-0002-4911-3183 |
| _version_ | 1826216628081131520 |
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| author | Faulkner, Thomas Liu, Hong |
| author2 | Massachusetts Institute of Technology. Center for Theoretical Physics |
| author_facet | Massachusetts Institute of Technology. Center for Theoretical Physics Faulkner, Thomas Liu, Hong |
| author_sort | Faulkner, Thomas |
| collection | MIT |
| description | We show that open strings living on a D-brane which lies outside an AdS black hole We show that open strings living on a D-brane which lies outside an AdS black hole can tunnel into the black hole through worldsheet instantons. These instantons have a simple interpretation in terms of thermal quarks in the dual Yang–Mills (YM) theory. As an application we calculate the width of a meson in a strongly coupled quark–gluon plasma which is described holographically as a massless mode on a D7 brane in AdS[subscript 5]×S[subscript 5]. While the width of the meson is zero to all orders in the View the 1/sqrt λ source expansion with λ the 't Hooft coupling, it receives non-perturbative contributions in View the 1/sqrt λ source from worldsheet instantons. We find that the width increases quadratically with momentum at large momentum and comment on potential phenomenological implications of this enhancement for heavy ion collisions. We also comment on how this non-perturbative effect has important consequences for the phase structure of the YM theory obtained in the classical gravity limit. |
| first_indexed | 2024-09-23T16:50:29Z |
| format | Article |
| id | mit-1721.1/52695 |
| institution | Massachusetts Institute of Technology |
| language | en_US |
| last_indexed | 2024-09-23T16:50:29Z |
| publishDate | 2010 |
| publisher | Elsevier |
| record_format | dspace |
| spelling | mit-1721.1/526952022-09-29T21:52:28Z Meson widths from string worldsheet instantons Faulkner, Thomas Liu, Hong Massachusetts Institute of Technology. Center for Theoretical Physics Massachusetts Institute of Technology. Department of Physics Liu, Hong Faulkner, Thomas Liu, Hong We show that open strings living on a D-brane which lies outside an AdS black hole We show that open strings living on a D-brane which lies outside an AdS black hole can tunnel into the black hole through worldsheet instantons. These instantons have a simple interpretation in terms of thermal quarks in the dual Yang–Mills (YM) theory. As an application we calculate the width of a meson in a strongly coupled quark–gluon plasma which is described holographically as a massless mode on a D7 brane in AdS[subscript 5]×S[subscript 5]. While the width of the meson is zero to all orders in the View the 1/sqrt λ source expansion with λ the 't Hooft coupling, it receives non-perturbative contributions in View the 1/sqrt λ source from worldsheet instantons. We find that the width increases quadratically with momentum at large momentum and comment on potential phenomenological implications of this enhancement for heavy ion collisions. We also comment on how this non-perturbative effect has important consequences for the phase structure of the YM theory obtained in the classical gravity limit. Department of Energy (contracts #DF-FC02-94ER40818) 2010-03-17T21:00:00Z 2010-03-17T21:00:00Z 2009-02 2009-01 Article http://purl.org/eprint/type/SubmittedJournalArticle 0370-2693 http://hdl.handle.net/1721.1/52695 Faulkner, Thomas, and Hong Liu. “Meson widths from string worldsheet instantons.” Physics Letters B 673.2 (2009): 161-165. https://orcid.org/0000-0002-4911-3183 en_US http://dx.doi.org/10.1016/j.physletb.2009.01.071 Physics Letters B Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use. application/pdf Elsevier Hong Liu |
| spellingShingle | Faulkner, Thomas Liu, Hong Meson widths from string worldsheet instantons |
| title | Meson widths from string worldsheet instantons |
| title_full | Meson widths from string worldsheet instantons |
| title_fullStr | Meson widths from string worldsheet instantons |
| title_full_unstemmed | Meson widths from string worldsheet instantons |
| title_short | Meson widths from string worldsheet instantons |
| title_sort | meson widths from string worldsheet instantons |
| url | http://hdl.handle.net/1721.1/52695 https://orcid.org/0000-0002-4911-3183 |
| work_keys_str_mv | AT faulknerthomas mesonwidthsfromstringworldsheetinstantons AT liuhong mesonwidthsfromstringworldsheetinstantons |