38 citations · 249 across the 22 of their papers we have counts for
22 papers
A field-inspired derivation of open string amplitudes
Humberto Gomez, Renann Lipinski Jusinskas, Sitender Pratap Kashyap
We propose a new method for computing -point tree-level open string amplitudes, inspired by the field-theoretical perturbiner framework and bypassing world-sheet moduli integrat…
Perturbiner methods in scattering amplitudes
Renann Lipinski Jusinskas
Berends--Giele currents have recently attracted renewed attention across the amplitude community, appearing in new contexts ranging from gravitational amplitudes to cosmological co…
On the amplitude expansion of gluon correlators in
Humberto Gomez, Renann Lipinski Jusinskas, Arthur Lipstein +1
We show that tree-level gluon correlators in admit a natural expansion in terms of flat-space scattering amplitudes at all multiplicities. In particular, every …
Tension between string amplitude prescriptions with presumed spacetime supersymmetry
Thales Azevedo, Alessandro Georgoudis, Renann Lipinski Jusinskas +1
We analyze an alternative prescription for computing tree level scattering amplitudes in the pure spinor superstring. Proposed by Berkovits, and inspired by an earlier work by Lee…
Four-dimensional spectrum generating algebra for the superstring
Renann Lipinski Jusinskas, Aravindhan Srinivasan
We derive the spectrum generating algebra for the hybrid string with manifest super Poincaré symmetry in . Our DDF operators e…
Perturbative Unitarity Calls for An Action
Subhroneel Chakrabarti, Renann Lipinski Jusinskas
In this work, we investigate the consistency of a perturbative definition of the S-matrix in a particular class of non-Lagrangian theories. We focus on the -form theories propos…
Effective Field Theories and Cosmological Scattering Equations
Connor Armstrong, Humberto Gomez, Renann Lipinski Jusinskas +2
We propose worldsheet formulae for wavefunction coefficients of the massive non-linear sigma model (NLSM), scalar Dirac-Born-Infeld (DBI), and special Galileon (sGal) theories in d…
Cosmological Scattering Equations at Tree-level and One-loop
Humberto Gomez, Renann Lipinski Jusinskas, Arthur Lipstein
We recently proposed a formula for tree-level -point correlators of massive theory in de Sitter momentum space which consists of an integral over punctures on the Riem…
Asymmetrically twisted strings
Renann Lipinski Jusinskas
In this letter a new class of twisted strings is presented, with an asymmetry between the holomorphic and antiholomorphic sectors parametrized by an integer . Their physical con…
The structure of gauge theories with matter
Humberto Gomez, Renann Lipinski Jusinskas, Cristhiam Lopez-Arcos +1
In this work we present an algebraic approach to the dynamics and perturbation theory at tree-level for gauge theories coupled to matter. The field theories we will consider are: C…
Chiral strings, the sectorized description and their integrated vertex operators
Renann Lipinski Jusinskas
A chiral string can be seen as an ordinary string in a singular gauge for the worldsheet metric and has the ambitwistor string as its tensionless limit. As proposed by Siegel, ther…
Bosonic sectorized strings and the theory
Thales Azevedo, Renann Lipinski Jusinskas, Matheus Lize
In this work, we investigate the bosonic chiral string in the sectorized interpretation, computing its spectrum, kinetic action and -point amplitudes. As expected, the bosonic a…
Towards the underlying gauge theory of the pure spinor superstring
Renann Lipinski Jusinskas
Previous attempts to determine the worldsheet origin of the pure spinor formalism were not completely successful, but introduced important concepts that seem to be connected to its…
Quantization of the particle with a linear massless solution
Renann Lipinski Jusinskas
In this work, a solution linear in the momentum for the massless constraint is investigated. It is presented in terms of a to decompositio…
Connecting the ambitwistor and the sectorized heterotic strings
Thales Azevedo, Renann Lipinski Jusinskas
The sectorized description of the (chiral) heterotic string using pure spinors has been misleadingly viewed as an infinite tension string. One evidence for this fact comes from the…
Background constraints in the infinite tension limit of the heterotic string
Thales Azevedo, Renann Lipinski Jusinskas
In this work we investigate the classical constraints imposed on the supergravity and super Yang-Mills backgrounds in the limit of the heterotic string using the pure spi…
Notes on the ambitwistor pure spinor string
Renann Lipinski Jusinskas
In this work, some aspects of the ambitwistor pure spinor string are investigated. The ghost is presented and its main properties are derived in a simple way, very similar to t…
On the field-antifield (a)symmetry of the pure spinor superstring
Renann Lipinski Jusinskas
In this work, the DDF-like approach to the pure spinor cohomology is extended to the next ghost number level, the so called antifields. In a direct (supersymmetric) parallel to the…
Light-Cone Analysis of the Pure Spinor Formalism for the Superstring
Nathan Berkovits, Renann Lipinski Jusinskas
Physical states of the superstring can be described in light-cone gauge by acting with transverse bosonic and fermionic operators on an $SO\le…
Spectrum generating algebra for the pure spinor superstring
Renann Lipinski Jusinskas
In this work, a DDF-like construction within the pure spinor formalism is presented. Starting with the light-cone massless vertices, the creation/annihilation algebra is derived in…
Notes on the pure spinor b ghost
Renann Lipinski Jusinskas
In this work, a particular BRST-exact class of deformations of the b ghost in the non-minimal pure spinor formalism is investigated and the impact of this construction in the $\mat…
Nilpotency of the b ghost in the non-minimal pure spinor formalism
Renann Lipinski Jusinskas
The b ghost in the non minimal pure spinor formalism is not a fundamental field. It is based on a complicated chain of operators and proving its nilpotency is nontrivial. Chandia p…