Zobrazeno 1 - 10
of 230
pro vyhledávání: '"Trnka, Jaroslav"'
In this paper we discuss the geometric integrand expansion of the five-point Wilson loop with one Lagrangian insertion in maximally supersymmetric Yang-Mills theory. We construct the integrand corresponding to an all-loop class of ladder-type geometr
Externí odkaz:
http://arxiv.org/abs/2410.11456
In this paper, we study the scattering amplitudes and soft theorems for the sigma models with two scalars. We show that if the particles are Goldstone bosons, then you necessarily get Adler zero with no possibility for non-trivial soft theorems. For
Externí odkaz:
http://arxiv.org/abs/2409.09534
Autor:
Bartsch, Christoph, Brown, Taro V., Kampf, Karol, Oktem, Umut, Paranjape, Shruti, Trnka, Jaroslav
Recently, Arkani-Hamed et al. proposed the existence of zeros in scattering amplitudes in certain quantum field theories including the cubic adjoint scalar theory Tr($\phi^3$), the $SU(N)$ non-linear sigma model (NLSM) and Yang-Mills (YM) theory. The
Externí odkaz:
http://arxiv.org/abs/2403.10594
In this letter, we discuss a generalization of the Adler zero to loop integrands in the planar limit of the $SU(N)$ non-linear sigma model (NLSM). While possible to maintain at one-loop, the Adler zero for integrands is violated starting at the two-l
Externí odkaz:
http://arxiv.org/abs/2401.04731
We study a novel geometric expansion for scattering amplitudes in the planar sector of N=4 super Yang-Mills theory, in the context of the Amplituhedron which reproduces the all-loop integrand as a canonical differential form on the positive geometry.
Externí odkaz:
http://arxiv.org/abs/2312.17736
The Amplituhedron provides, via geometric means, the all-loop integrand of scattering amplitudes in maximally supersymmetric Yang-Mills theory. Unfortunately, dimensional regularization, used conventionally for integration, breaks the beautiful geome
Externí odkaz:
http://arxiv.org/abs/2311.10814
Autor:
Paranjape, Shruti, Trnka, Jaroslav
In this letter we derive new expressions for tree-level graviton amplitudes in $\mathcal{N}=8$ supergravity from BCFW recursion relations combined with new types of bonus relations. These bonus relations go beyond the famous $1/z^2$ behavior under a
Externí odkaz:
http://arxiv.org/abs/2309.05710
In this letter, we study tree-level scattering amplitudes of scalar particles in the context of effective field theories. We use tools similar to the soft bootstrap to build an ansatz for cyclically ordered amplitudes and impose the Bern-Carrasco-Joh
Externí odkaz:
http://arxiv.org/abs/2305.05688
In this paper, we study celestial amplitudes of Goldstone bosons and conformal soft theorems. Motivated by the success of soft bootstrap in momentum space and the important role of the soft limit behavior of tree-level amplitudes, our goal is to exte
Externí odkaz:
http://arxiv.org/abs/2303.14761