BEGIN:VCALENDAR
VERSION:2.0
PRODID:-//Talks.cam//talks.cam.ac.uk//
X-WR-CALNAME:Talks.cam
BEGIN:VEVENT
SUMMARY:Scattering on plane waves and the double copy - Tim Adamo (Imperia
 l) 
DTSTART:20171109T130000Z
DTEND:20171109T140000Z
UID:TALK83981@talks.cam.ac.uk
CONTACT:Dr. Carl Turner
DESCRIPTION:In recent years\, many new techniques have been developed whic
 h lead to remarkable insights into perturbative QFT. By-and-large\, these 
 techniques have only been applied to the computation of observables on fla
 t backgrounds\, so one can legitimately question whether they are robust f
 eatures of perturbative QFT or just a consequence of the simplicity of Min
 kowski space. One such technique is the 'double copy\,' a method for const
 ructing scattering amplitudes in gravity from scattering amplitudes in gau
 ge theory\; it even has a catchy slogan\, Gravity = (Gauge Theory)^2. In t
 his talk I'll describe how the robustness of the double copy can be tested
  by considering scattering on plane wave backgrounds. Although the non-tri
 vial scattering background introduces several subtleties\, we'll see that 
 a notion of double copy persists. Time permitting\, I'll also mention how 
 these new scattering problems can be studied using worldsheet models known
  as 'ambitwistor strings.'  
LOCATION:Potter Room (first floor\, Pav. B)
END:VEVENT
END:VCALENDAR