29 citations · 98 across the 21 of their papers we have counts for
22 papers
Seesaw and Axion in No-Scale Gravity
Anamaria Hell, Lincoln da S. Pereira, Tsutomu T. Yanagida
The No-Scale gravity is a compelling framework to describe particle physics, gravity and cosmology, in which all mass scales are an illusion given by the value of a scalar field $ϕ…
AI's Capability in Assisting Scientific Research in Physics, Astrophysics, and Cosmology II: Project Planning and Proposal Evaluation
Jia Liu, Veena Krishnaraj, Kateryna Vovk +18
We investigate how well large language models (LLMs) can assist scientific project planning and proposal evaluation. One-page project plans were independently generated for eight e…
AI's Capability in Assisting Scientific Research in Physics, Astrophysics, and Cosmology I: Literature Review
Anamaria Hell, Kateryna Vovk, Veena Krishnaraj +18
We investigate how well large language models (LLMs) can assist with literature reviews for scientific research. We perform a controlled study of eight expert-conceived research pr…
Wick-connected theories and Lorentz violation
Niklas Götzberger, Anamaria Hell
We consider double Wick rotation in field theories, which analytically continues the time coordinate, and then reinterprets one of the spatial directions as the new Lorentzian time…
LLMs with in-context learning for Algorithmic Theoretical Physics
Anamaria Hell, Leander Thiele
There is an increasing number of algorithmic computations in theoretical physics. These, while conceptually simple, can nevertheless be time-consuming and contain subtleties that s…
How to deal with conformal and pure scale-invariant theories of gravity in d dimensions?
Anamaria Hell, Dieter Lust
Conformally-invariant and pure, scale-invariant theories of gravity are particularly interesting in four or higher dimensions. Yet, in contrast to their four-dimensional counterpar…
Branching Universes
Anamaria Hell, Tatsuya Daniel
We propose the idea that our Universe is a realization among different possible branches, which can be observationally tested through the modified dispersion relation of the gravit…
Pathologies of dimension-zero scalar fields
James M. Cline, Anamaria Hell
It has been claimed in a series of papers that scalar fields with a fourth-order Lagrangian can solve the cosmological constant problem by canceling the loop contri…
On the Kalb-Ramond field with non-minimal coupling to gravity
Anamaria Hell, Ippei Obata
We consider a massive Kalb-Ramond field with a general non-minimal coupling to gravity. We first study the theory in flat space-time, taking into account the non-linearities. We sh…
The recipe for the degrees of freedom
Anamaria Hell, Elisa G. M. Ferreira, Dieter Lust +1
We consider the question of counting the degrees of freedom in theoretical models, with an emphasis on theories of fields and gravity. Among the possible approaches, the Hamiltonia…
The non-minimal 3-form cosmology and the rise of the cuscuton
Antonio De Felice, Anamaria Hell
We consider the 3-form theory with non-minimal coupling to gravity in an expanding Universe. First, we assume that the background is homogeneous and isotropic, and that the three-f…
Aspects of non-minimally coupled curvature with power laws
Anamaria Hell, Dieter Lust
We consider a class of theories containing power-law terms in both the Ricci scalar and a scalar field, including their non-minimal couplings. As a first step, we systematically cl…
Accelerating Universe from Constraints
Anamaria Hell, Misao Sasaki
We introduce a framework of constrained scalar fields that can give rise to cosmological evolution of the Universe independent of the values of the cosmological constant. Focusing…
Conformal and pure scale-invariant gravities in d dimensions
Anamaria Hell, Dieter Lust
We consider conformal and scale-invariant gravities in d dimensions, with a special focus on pure gravity in the scale-invariant case. In four dimensions, the structure of th…
Aspects of massive gauge fields
Anamaria Hell
Massive gauge fields whose mass is introduced by hand form very intriguing theories. They depart from their massless counterparts by a straightforward modification. Yet, taking the…
On the cosmological degrees of freedom of Proca field with non-minimal coupling to gravity
Antonio De Felice, Anamaria Hell
We study Proca theory with non-minimal coupling to gravity through the Ricci tensor and Ricci scalar interactions. We show that in the homogeneous and isotropic Universe together w…
Revisiting Stability in New General Relativity
Sebastian Bahamonde, Daniel Blixt, Konstantinos F. Dialektopoulos +1
We study the degrees of freedom in New General Relativity -- flat and metric compatible family of theories -- around the Minkowski background in a gauge invariant manner. First, we…
Unveiling the inconsistency of the Proca theory with non-minimal coupling to gravity
Anamaria Hell
We study the degrees of freedom of the Proca theory, non-minimally coupled to gravity. In the Minkowski background, this theory propagates five degrees of freedom -- a massive long…
On the Degrees of Freedom of Gravity in Flat Spacetime
Anamaria Hell, Dieter Lust, George Zoupanos
We study the degrees of freedom of gravity in flat spacetime with two approaches. By rewriting the theory a la Stueckelberg, and implementing Lorentz-like gauges to the metri…
On the Ghost Problem of Conformal Gravity
Anamaria Hell, Dieter Lust, George Zoupanos
We study the metric perturbations around the de Sitter and Minkowski backgrounds in Conformal Gravity. We confirm the presence of ghosts in both cases. In the de Sitter case, by ap…
The strong couplings of massive Yang-Mills theory
Anamaria Hell
We study the massive Yang-Mills theory in which the mass term is added by hand. The standard perturbative approach suggests that the massless limit of this theory is not smooth. We…
On the duality of massive Kalb-Ramond and Proca fields
Anamaria Hell
We compare the massive Kalb-Ramond and Proca fields with a quartic self-interaction and show that the same strong coupling scale is present in both theories. In the Proca theory, t…