Showing 2025 · hep-thShow all
3 papers · 2 filters
hep-th2025
Approximating Feynman Integrals Using Complete Monotonicity and Stieltjes Properties
Sara Ditsch, Johannes M. Henn, Prashanth Raman
We introduce two novel numerical approaches for computing Feynman integrals based on their complete monotonicity (CM) and Stieltjes properties. The first method uses that scalar Fe…
hep-th2025
Canonical Forms as Dual Volumes
Elia Mazzucchelli, Prashanth Raman
We study dual volume representations of canonical forms for positive geometries in projective spaces, expressing their rational canonical functions as Laplace transforms of measure…
hep-th2025
Mastering Cosmological Amplitudes Using Generalized Ramanujan's Theorem
Prashanth Raman, Qinglin Yang
We present a systematic method for computing cosmological amplitudes, including in-in correlators and wavefunction coefficients, in FRW spacetime. Specializing to cases with confor…