Details

Autor(en) / Beteiligte

• Dunbar, David C.
• Jehu, Guy R.
• Perkins, Warren B.

Titel

Two-loop gravity amplitudes from four dimensional unitarity

Ist Teil von

• Physical review. D, 2017-02, Vol.95 (4), Article 046012

Ort / Verlag

College Park: American Physical Society

Erscheinungsjahr

2017

Link zum Volltext

Quelle

Alma/SFX Local Collection

Beschreibungen/Notizen

• We compute the polylogarithmic parts of the two-loop four- and five-graviton amplitudes where the external helicities are positive and express these in a simple compact analytic form. We use these to extract the ln(μ2) terms from both the four- and five-point amplitudes and show that these match the same R3 counterterm.