November 11, 2022
Dipartimento di Fisica, Università di Torino
Europe/Rome timezone
This meeting is dedicated to the memory of our friend Alessandro D’Adda (INFN, Torino), who left us a few months ago.

From dual amplitudes to string field theory… and back

Nov 11, 2022, 3:20 PM
Aula C (Dipartimento di Fisica, Università di Torino)

Aula C

Dipartimento di Fisica, Università di Torino

Via Pietro Giuria 1, 10125 TORINO (It)


Carlo Maccaferri (Unito)


I give a brief overview on recent results in string field theory (SFT) concerning infrared divergent string amplitudes. SFT is constructed in such a way that it reproduces string amplitudes when these are finite. When these are divergent on the other hand, the amplitudes computed from SFT are finite and unambiguous. These amplitudes capture fundamental quantities like vacuum energy shifts and allow to make firm statements about background independence in string theory.
I take the opportunity to point to historical papers from Alessandro and collaborators which pioneered several topics I discuss.

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