Classical gravitational scattering from Worldline QFT : a case study for scalar-tensor theory

by Saptaswa Ghosh (Indian Inst. Tech., Gandhinagar)

Friday 3 May 2024, 14:30 → 15:30 Europe/Rome

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In this talk, we will briefly describe a technique useful for the computation of gravitational observable, impulse and waveform in a black hole scattering event, namely "Worldline Quantum Field theory." We then show how to apply this formalism for a theory beyond GR  involving additional scalar degrees of freedom, namely the Scalar-Tensor theory. We will show how the impulse and waveform get corrected due to the extra scalar degree of freedom upto 2PM. Furthermore, we will point out several intricacies when the mass of the scalar field is non-vanishing.

 

Zoom link: https://unipd.zoom.us/j/82787632554?pwd=U2Z5dm5yVS9nSHhER1ZIRTJIZk9SZz09
Meeting ID: 827 8763 2554
 

Password: 928290