[astroseminar at Sapienza] Gravity theory webinar Wed Dec 9th @2pm: Rafael Porto (DESY) - "From Boundary Data to Bound States"

[Paolo Pani]

Next gravity-theory webinar is

*Rafael Porto (DESY): "From Boundary Data to Bound States"*
*Dec, 9th (Wed) @ 2pm*

*The talk is split in two chapters. After a brief introduction to the
binary inspiral problem and the motivation to pursue high-accuracy
computations, in the first part I will demonstrate how the seemingly
unrelated scattering problem carries all the relevant information to
compute gravitational observables for elliptic orbits via a “boundary to
bound” (B2B) dictionary — without ever resorting to a Hamiltonian. In the
second part, I will show how an effective field theory (EFT) approach to
the two-body problem in general relativity, together with modern
integration methods from particle physics, allow us to systematically (and
very efficiently) obtain the scattering data to input in the B2B map. As a
paradigmatic example, I readily derive all the adiabatic invariants for
bound states of non-spinning compact objects to third order in Newton’s
constant and to all orders in the relative velocity — known as the third
"Post-Minkowskian" order — from a computation of the scattering angle in
the EFT approach.*


Zoom link:
https://uniroma1.zoom.us/j/81283707469?pwd=SzkyMk5jRm0xcEN3WE5MYVh1RVFtQT09
ID meeting: 812 8370 7469
Passcode: 915450

Calendar of the future gravity theory webinars:
https://calendar.google.com/calendar/u/1?cid=Y191MGo3bG9pYzE1bjBxdGFhN3A4MTlzNDg2Y0Bncm91cC5jYWxlbmRhci5nb29nbGUuY29t

Cheers,
Paolo

-- 
Paolo Pani
Associate Professor
ERC StG Fellow, DarkGRA project
Junior Fellow, Scuola Superiore di Studi Avanzati Sapienza

Physics Department (Marconi Building), 3rd floor, room 334
Sapienza University of Rome
Piazzale Aldo Moro 5 - 00185 Rome (Italy)
+39 06 4991 4472 (int 24472)

-- 
________________________________________________________
Le informazioni 
contenute in questo messaggio di posta elettronica sono strettamente 
riservate e indirizzate esclusivamente al destinatario. Si prega di non 
leggere, fare copia, inoltrare a terzi o conservare tale messaggio se non 
si è il legittimo destinatario dello stesso. Qualora tale messaggio sia 
stato ricevuto per errore, si prega di restituirlo al mittente e di 
cancellarlo permanentemente dal proprio computer.
The information contained 
in this e mail message is strictly confidential and intended for the use of 
the addressee only.  If you are not the intended recipient, please do not 
read, copy, forward or store it on your computer. If you have received the 
message in error, please forward it back to the sender and delete it 
permanently from your computer system.

-- 

-------------- next part --------------
An HTML attachment was scrubbed...
URL: http://lists2.roma1.infn.it/pipermail/astroseminar/attachments/20201203/1d4eb287/attachment.html