On non-perturbative unitarity in gravitational scattering
Abstract We argue that the tree-level graviton-scalar scattering in the Regge limit is unitarized by non-perturbative effects within General Relativity alone, that is without resorting to any extension thereof. At Planckian energy the back reaction of the incoming graviton on the background geometry...
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SpringerOpen
2019-11-01
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| Series: | European Physical Journal C: Particles and Fields |
| Online Access: | http://link.springer.com/article/10.1140/epjc/s10052-019-7403-2 |
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doaj-a2fe691d92e74ef29831caf052cbe1272020-11-25T03:58:35ZengSpringerOpenEuropean Physical Journal C: Particles and Fields1434-60441434-60522019-11-0179111610.1140/epjc/s10052-019-7403-2On non-perturbative unitarity in gravitational scatteringIvo Sachs0Tung Tran1Arnold Sommerfeld Center for Theoretical Physics, Ludwig Maximilian University of MunichAlbert Einstein InstituteAbstract We argue that the tree-level graviton-scalar scattering in the Regge limit is unitarized by non-perturbative effects within General Relativity alone, that is without resorting to any extension thereof. At Planckian energy the back reaction of the incoming graviton on the background geometry produces a non-perturbative plane wave which softens the UV-behavior in turn. Our amplitude interpolates between the perturbative graviton-scalar scattering at low energy and scattering on a classical plane wave in the Regge limit that is bounded for all values of s.http://link.springer.com/article/10.1140/epjc/s10052-019-7403-2 |
| collection |
DOAJ |
| language |
English |
| format |
Article |
| sources |
DOAJ |
| author |
Ivo Sachs Tung Tran |
| spellingShingle |
Ivo Sachs Tung Tran On non-perturbative unitarity in gravitational scattering European Physical Journal C: Particles and Fields |
| author_facet |
Ivo Sachs Tung Tran |
| author_sort |
Ivo Sachs |
| title |
On non-perturbative unitarity in gravitational scattering |
| title_short |
On non-perturbative unitarity in gravitational scattering |
| title_full |
On non-perturbative unitarity in gravitational scattering |
| title_fullStr |
On non-perturbative unitarity in gravitational scattering |
| title_full_unstemmed |
On non-perturbative unitarity in gravitational scattering |
| title_sort |
on non-perturbative unitarity in gravitational scattering |
| publisher |
SpringerOpen |
| series |
European Physical Journal C: Particles and Fields |
| issn |
1434-6044 1434-6052 |
| publishDate |
2019-11-01 |
| description |
Abstract We argue that the tree-level graviton-scalar scattering in the Regge limit is unitarized by non-perturbative effects within General Relativity alone, that is without resorting to any extension thereof. At Planckian energy the back reaction of the incoming graviton on the background geometry produces a non-perturbative plane wave which softens the UV-behavior in turn. Our amplitude interpolates between the perturbative graviton-scalar scattering at low energy and scattering on a classical plane wave in the Regge limit that is bounded for all values of s. |
| url |
http://link.springer.com/article/10.1140/epjc/s10052-019-7403-2 |
| work_keys_str_mv |
AT ivosachs onnonperturbativeunitarityingravitationalscattering AT tungtran onnonperturbativeunitarityingravitationalscattering |
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