Zobrazeno 1 - 10
of 50
pro vyhledávání: '"Pokraka, Andrzej"'
Autor:
De, Shounak, Pokraka, Andrzej
Significant progress has been made in our understanding of the analytic structure of FRW wavefunction coefficients, facilitated by the development of efficient algorithms to derive the differential equations they satisfy. Moreover, recent findings in
Externí odkaz:
http://arxiv.org/abs/2411.09695
Arkani-Hamed and collaborators have recently shown that scattering amplitudes for colored theories can be expressed as integrals over combinatorial objects simply constructed from surfaces decorated by kinematic data. In this paper we extend the curv
Externí odkaz:
http://arxiv.org/abs/2406.04411
We develop a spinor helicity formalism for five-dimensional scattering amplitudes of any mass and spin configuration. While five-dimensional spinor helicity variables have been previously studied in the context of N=2,4 supersymmetric Yang-Mills scat
Externí odkaz:
http://arxiv.org/abs/2405.09533
We consider the 5-mass kite family of self-energy Feynman integrals and present a systematic approach for constructing an epsilon-form basis, along with its differential equation pulled back onto the moduli space of two tori. Each torus is associated
Externí odkaz:
http://arxiv.org/abs/2401.14307
We study the twisted (co)homology of a family of genus-one integrals -- the so called Riemann-Wirtinger integrals. These integrals are closely related to one-loop string amplitudes in chiral splitting where one leaves the loop-momentum, modulus and a
Externí odkaz:
http://arxiv.org/abs/2312.02148
In this talk, we review a loop-by-loop approach used to generate differential equations for multi-scale (dual) Feynman integrals. We illustrate the method on a well-established example: the unequal mass elliptic sunrise.
Comment: Contribution to
Comment: Contribution to
Externí odkaz:
http://arxiv.org/abs/2309.04592
We compute the stress-tensor two-point function in three-dimensional Yang-Mills theory to three-loops in perturbation theory. Using its calculable shape at high momenta, we test the notion that its Borel transform is saturated at low energies by the
Externí odkaz:
http://arxiv.org/abs/2309.04472
Autor:
De, Shounak, Pokraka, Andrzej
Publikováno v:
JHEP03(2024)156
The cosmological polytope and bootstrap programs have revealed interesting connections between positive geometries, modern on-shell methods and bootstrap principles studied in the amplitudes community with the wavefunction of the Universe in toy mode
Externí odkaz:
http://arxiv.org/abs/2308.03753
Autor:
Giroux, Mathieu, Pokraka, Andrzej
We present a loop-by-loop method for computing the differential equations of Feynman integrals using the recently developed dual form formalism. We give explicit prescriptions for the loop-by-loop fibration of multi-loop dual forms. Then, we test our
Externí odkaz:
http://arxiv.org/abs/2210.09898