Curved-spacetime metric generated by Planckian energy string collisions
We study Planckian energy string collisions in flat spacetime as the scattering of a string in the effective curved background produced by the others as the impact parameter b decreases. We find the effective energy-density distribution ()exp{-22}, generated by these collisions. Two different regime...
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| Acceso en línea: | http://hdl.handle.net/20.500.12110/paper_05562821_v46_n10_p4520_Loust |
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todo:paper_05562821_v46_n10_p4520_Loust2023-10-03T15:35:25Z Curved-spacetime metric generated by Planckian energy string collisions Loust, C.O. Snchez, N. We study Planckian energy string collisions in flat spacetime as the scattering of a string in the effective curved background produced by the others as the impact parameter b decreases. We find the effective energy-density distribution ()exp{-22}, generated by these collisions. Two different regimes can be studied: intermediate impact parameters xd<<b<<lns2 (xd characterizing the string fluctuations) and large impact parameters b>>lns2>>xd. The effective metric generated by these collisions for large b is a gravitational shock wave of profile f()p4-D, i.e., the Aichelburg-Sexl (AS) geometry for a pointlike particle of momentum p. For intermediate b, f()q2, corresponding to an extended source of momentum q. The scattering matrix in this geometry and its implications for the string collision process are analyzed. We show that the poles iGs=n, n=0,1,2, characteristic of the scattering by the AS geometry are absent here, due to the extended nature of the effective source. © 1992 The American Physical Society. JOUR info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar http://hdl.handle.net/20.500.12110/paper_05562821_v46_n10_p4520_Loust |
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Universidad de Buenos Aires |
| institution_str |
I-28 |
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R-134 |
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Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) |
| description |
We study Planckian energy string collisions in flat spacetime as the scattering of a string in the effective curved background produced by the others as the impact parameter b decreases. We find the effective energy-density distribution ()exp{-22}, generated by these collisions. Two different regimes can be studied: intermediate impact parameters xd<<b<<lns2 (xd characterizing the string fluctuations) and large impact parameters b>>lns2>>xd. The effective metric generated by these collisions for large b is a gravitational shock wave of profile f()p4-D, i.e., the Aichelburg-Sexl (AS) geometry for a pointlike particle of momentum p. For intermediate b, f()q2, corresponding to an extended source of momentum q. The scattering matrix in this geometry and its implications for the string collision process are analyzed. We show that the poles iGs=n, n=0,1,2, characteristic of the scattering by the AS geometry are absent here, due to the extended nature of the effective source. © 1992 The American Physical Society. |
| format |
JOUR |
| author |
Loust, C.O. Snchez, N. |
| spellingShingle |
Loust, C.O. Snchez, N. Curved-spacetime metric generated by Planckian energy string collisions |
| author_facet |
Loust, C.O. Snchez, N. |
| author_sort |
Loust, C.O. |
| title |
Curved-spacetime metric generated by Planckian energy string collisions |
| title_short |
Curved-spacetime metric generated by Planckian energy string collisions |
| title_full |
Curved-spacetime metric generated by Planckian energy string collisions |
| title_fullStr |
Curved-spacetime metric generated by Planckian energy string collisions |
| title_full_unstemmed |
Curved-spacetime metric generated by Planckian energy string collisions |
| title_sort |
curved-spacetime metric generated by planckian energy string collisions |
| url |
http://hdl.handle.net/20.500.12110/paper_05562821_v46_n10_p4520_Loust |
| work_keys_str_mv |
AT loustco curvedspacetimemetricgeneratedbyplanckianenergystringcollisions AT snchezn curvedspacetimemetricgeneratedbyplanckianenergystringcollisions |
| _version_ |
1782030620569894912 |