Explanipedia

Celestial kinematical interpretation for an extended algebra Open

R. Casalbuoni, D. Dominici, José Figueroa-O’Farrill, Joaquim Gomis · 2025

Motivated by the work of Longhi and Materassi, who constructed a realization of the (centerless) BMS 4 algebra for the massive Klein-Gordon field in 3 + 1 dimensions, we build a realization of the (centerless) massless BMS …

AdS Carroll structures from Poincaré isomorphism: Asymptotic symmetry analysis Open

Luis Avilés, Joaquim Gomis, Diego Hidalgo, Omar Valdivia · 2025

Starting from the isomorphism between the anti–de Sitter (AdS) Carroll and Poincaré algebras, we obtain the magnetic AdS Carroll gravity in three dimensions. Moreover, we derive the first set of asymptotic conditions for the AdS Carroll st…

A general action for a particle in 2 + 1 anti-de Sitter space Open

Carles Batlle, Joaquim Gomis · 2025

In this paper, we discuss a general action for a particle in AdS 3 using the nonlinear realization framework. Critical sectors are found and characterized in terms of the parameters appearing in the Lagrangian, generalizing the known resul…

BMS-like algebras: canonical realisations and BRST quantisation Open

Carles Batlle, José Figueroa-O’Farrill, Joaquim Gomis, Girish S Vishwa · 2024

We generalise BMS algebras in three dimensions by the introduction of an arbitrary real parameter $λ$, recovering the standard algebras (BMS, extended BMS and Weyl-BMS) for $λ=-1$. We exhibit a realisation of the (centreless) Weyl $λ$-BMS …

Nonequivalence of Carroll limits in relativistic string theory Open

R. Casalbuoni, D. Dominici, Joaquim Gomis · 2024

We construct new Carroll strings in flat space by considering the Carroll limit of equivalent relativistic string theories at the classical level. In the limit these Carroll strings are no longer equivalent and have different degrees of fr…

AdS Carroll Structures from Poincaré Isomorphism: Asymptotic Symmetry Analysis Open

Luis Avilés, Joaquim Gomis, Diego Hidalgo, Omar Valdivia · 2024

Starting from the isomorphism between the AdS Carroll and Poincaré algebras, we map the three-dimensional asymptotically flat solutions of Poincaré gravity into an AdS Carroll spacetime. We show the mapped solutions satisfy the field equat…

Worldsheet formalism for decoupling limits in string theory Open

Joaquim Gomis, Ziqi Yan · 2024

A bstract We study the bosonic sector of a decoupling limit of type IIA superstring theory, where a background Ramond-Ramond one-form is fined tuned to its critical value, such that it cancels the associated background D0-brane tension. Th…

Non equivalence of Carroll limits in relativistic string theory Open

R. Casalbuoni, Daniele Dominici, Joaquim Gomis · 2024

We construct new Carroll strings in flat space by considering the Carroll limit of equivalent relativistic string theories at classical level. In the limit these Carroll strings are no longer equivalent and have different degrees of freedo…

Superconformal interacting particles Open

R. Casalbuoni, D. Dominici, Joaquim Gomis · 2024

The free massless superparticle is reanalyzed, in particular by performing the Gupta-Bleuler quantization, using the first- and second-class constraints of the model, and obtaining as a result, the Weyl equation for the spinorial component…

Non-Lorentzian expansions of the Lorentz force and kinematical algebras Open

José Luis V. Cerdeira, Joaquim Gomis, Axel Kleinschmidt · 2024

A bstract We consider non-Lorentzian expansions, Galilean and Carrollian, of the Lorentz force equation in which both the particle position and the electro-magnetic field are expanded. There are two well-known limits in the case of a const…

Superconformal interacting particles Open

R. Casalbuoni, Daniele Dominici, Joaquim Gomis · 2023

The free massless superparticle is reanalysed, in particular by performing the Gupta-Bleuler quantization, using the first and second class constraints of the model, and obtaining, as a result, the Weyl equation for the spinorial component…

Worldsheet Formalism for Decoupling Limits in String Theory Open

Joaquim Gomis, Ziqi Yan · 2023

We study the bosonic sector of a decoupling limit of type IIA superstring theory, where a background Ramond-Ramond one-form is fined tuned to its critical value, such that it cancels the associated background D0-brane tension. The light ex…

Particle realization of Bondi-Metzner-Sachs symmetry in 2 + 1 space-time Open

Carles Batlle, Víctor M. Campello, Joaquim Gomis · 2023

A bstract We construct a Lorentz invariant massive particle model in (2+1) space-time with an enlarged set of symmetries which includes Bondi-Metzner-Sachs (BMS) translations (supertranslations), using the non-linear realization framework.…

Non-Lorentzian expansions of the Lorentz force and kinematical algebras Open

José Luis V. Cerdeira, Joaquim Gomis, Axel Kleinschmidt · 2023

We consider non-Lorentzian expansions, Galilean and Carrollian, of the Lorentz force equation in which both the particle position and the electro-magnetic field are expanded. There are two well-known limits in the case of a constant field,…

Two interacting conformal Carroll particles Open

R. Casalbuoni, D. Dominici, Joaquim Gomis · 2023

In this paper we analyze two different models of two interacting conformal Carroll particles that can be obtained as the Carrollian limit of two relativistic conformal particles. The first model describes particles with zero velocity and e…

Particle realization of Bondi-Metzner-Sachs symmetry in 2+1 space-time Open

Carles Batlle, Víctor M. Campello, Joaquim Gomis · 2023

We construct a Lorentz invariant massive particle model in (2+1) space-time with an enlarged set of symmetries which includes Bondi-Metzner-Sachs (BMS) translations (supertranslations), using the non-linear realization framework. The Hamil…

Two interacting conformal Carroll particles Open

R. Casalbuoni, D. Dominici, Joaquim Gomis · 2023

In this note we analyse two different models of two interacting conformal Carroll particles that can be obtained as the Carrollian limit of two relativistic conformal particles. The first model describes particles with zero velocity and ex…

A non-lorentzian primer Open

Eric Bergshoeff, José Figueroa-O’Farrill, Joaquim Gomis · 2023

We review both the kinematics and dynamics of non-lorentzian theories and their associated geometries. First, we introduce non-lorentzian kinematical spacetimes and their symmetry algebras. Next, we construct actions describing the particl…

Report on scipost_202212_00063v1 Open

Eric Bergshoeff, José Figueroa-O’Farrill, Joaquim Gomis · 2023

We review both the kinematics and dynamics of non-lorentzian theories and their associated geometries.First, we introduce non-lorentzian kinematical spacetimes and their symmetry algebras.Next, we construct actions describing the particle …

Report on scipost_202212_00063v1 Open

Eric Bergshoeff, José Figueroa-O’Farrill, Joaquim Gomis · 2023

We review both the kinematics and dynamics of non-lorentzian theories and their associated geometries.First, we introduce non-lorentzian kinematical spacetimes and their symmetry algebras.Next, we construct actions describing the particle …

Electric/magnetic Newton-Hooke and Carroll Jackiw-Teitelboim gravity Open

Luis Avilés, Joaquim Gomis, Diego Hidalgo, Jorge Zanelli · 2023

A bstract We construct the electric and magnetic Newton-Hooke and Carroll Jackiw-Teitelboim gravity theories using the isomorphism of Newton-Hooke ± and (A-)dS Carroll algebras in (1+1)-spacetime dimensions. The starting point is the non-r…

Non-Lorentzian theories with and without constraints Open

Eric Bergshoeff, Joaquim Gomis, Axel Kleinschmidt · 2023

Polyharmonic Green functions and nonlocal Bondi-Metzner-Sachs transformations of a free scalar field Open

Carles Batlle, Víctor M. Campello, Joaquim Gomis · 2023

We express the nonlocal Bondi-Metzner-Sachs (BMS) charges of a free massless Klein-Gordon scalar field in 2 þ 1 in terms of the Green functions of the polyharmonic operators. Using the properties of these Green functions, we are able to di…

Multisymplectic constraint analysis of scalar field theories, Chern-Simons gravity, and bosonic string theory Open

Joaquim Gomis, Arnoldo Guerra, Narciso Román‐Roy · 2023

The (pre)multisymplectic geometry of the De Donder–Weyl formalism for field theories is further developed for a variety of field theories including a scalar field theory from the canonical Klein-Gordon action, the electric and magnetic Car…

Electric/Magnetic Newton-Hooke and Carroll Jackiw-Teitelboim Gravity Open

Luis Avilés, Joaquim Gomis, Diego Hidalgo, Jorge Zanelli · 2022

We construct the electric and magnetic Newton-Hooke and Carroll Jackiw-Teitelboim gravity theories using the isomorphism of Newton-Hooke$_\pm$ and (A-)dS Carroll algebras in $(1+1)$-spacetime dimensions. The starting point is the non-relat…

Non-Lorentzian theories with and without constraints Open

Eric Bergshoeff, Joaquim Gomis, Axel Kleinschmidt · 2022

We exhibit a new method of constructing non-Lorentzian models by applying a method we refer to as starting from a so-called seed Lagrangian. This method typically produces additional constraints in the system that can drastically alter the…

Multisymplectic Constraint Analysis of Scalar Field Theories, Chern-Simons Gravity, and Bosonic String Theory Open

Joaquim Gomis, Arnoldo Guerra, Narciso Román‐Roy · 2022

The (pre)multisymplectic geometry of the De Donder--Weyl formalism for field theories is further developed for a variety of field theories including a scalar field theory from the canonical Klein-Gordon action, the electric and magnetic Ca…

Polyharmonic Green Functions and Nonlocal BMS Transformations of a Free Scalar Field Open

Carles Batlle, Víctor M. Campello, Joaquim Gomis · 2022

We express the nonlocal BMS charges of a free massless Klein-Gordon scalar field in 2+1 in terms of the Green functions of the polyharmonic operators. Using the properties of these Green functions, we are able to discuss the asymptotic beh…

Infinite-Dimensional Algebras as Extensions of Kinematic Algebras Open

Joaquim Gomis, Axel Kleinschmidt · 2022

Kinematic algebras can be realised on geometric spaces and constrain the physical models that can live on these spaces. Different types of kinematic algebras exist and we consider the interplay of these algebras for non-relativistic limits…

Infinite-dimensional algebras as extensions of kinematic algebras Open

Joaquim Gomis, Axel Kleinschmidt · 2022

Kinematic algebras can be realised on geometric spaces and constrain the physical models that can live on these spaces. Different types of kinematic algebras exist and we consider the interplay of these algebras for non-relativistic limits…

Joaquim Gomis YOU? Author Swipe