254 citations · 1.3k across the 37 of their papers we have counts for
37 papers
Cancellation of UV divergences in ghost-free infinite derivative gravity
Alexey S. Koshelev, Oleg Melichev, Leslaw Rachwal
We consider the most general covariant gravity action up to terms that are quadratic in curvature. These can be endowed with generic form factors, which are functions of the d'Alem…
Visions in Quantum Gravity
Luca Buoninfante, Benjamin Knorr, K. Sravan Kumar +36
To deepen our understanding of Quantum Gravity and its connections with black holes and cosmology, building a common language and exchanging ideas across different approaches is cr…
Running of the Number of Degrees of Freedom in Quantum Conformal Gravity
Stefano Giaccari, Petr Jizba, Jaroslav Kňap +1
We study how the number of degrees of freedom in Weyl conformal gravity runs with the energy scale from the UV fixed point. To this end we employ two approaches. First, we utilize…
Generalization of conformal Hamada operators
Lesław Rachwał, Públio Rwany B. R. do Vale
The six-derivative conformal scalar operator was originally found by Hamada in its critical dimension of spacetime, . We generalize this construction to arbitrary dimensions $…
Renormalizability of nonlocal quantum gravity coupled to matter
Gianluca Calcagni, Breno L. Giacchini, Leonardo Modesto +2
We extensively study the ultraviolet quantum properties of a nonlocal action for gravity nonminimally coupled to matter. The theory unifies matter and gravity in an action principl…
Classical and quantum nonlocal gravity
Arnau Bas i Beneito, Gianluca Calcagni, Lesław Rachwał
This chapter of the Handbook of Quantum Gravity aims to illustrate how nonlocality can be implemented in field theories, as well as the manner it solves fundamental difficulties of…
Ultraviolet-complete quantum field theories with fractional operators
Gianluca Calcagni, Lesław Rachwał
We explore quantum field theories with fractional d'Alembertian . Both a scalar field theory with a derivative-dependent potential and gauge theory are super-renormalizable…
Introduction to Quantization of Conformal Gravity
Lesław Rachwał
A method for consistent quantization of conformal gravity treating conformal symmetry in a very controllable way is presented. First, we discuss local conformal symmetry in the fra…
Ultraviolet Finiteness or Asymptotic Safety in Higher Derivative Gravitational Theories
Leslaw Rachwal
We present and discuss well known conditions for ultraviolet finiteness and asymptotic safety. The requirements for complete absence of ultraviolet divergences in quantum field the…
Infrared behavior of Weyl Gravity
Lesław Rachwał, Stefano Giaccari
In this paper, we introduce and motivate the studies of Quantum Weyl Gravity (also known as Conformal Gravity). We discuss some appealing features of this theory both on classical…
On the vector conformal models in an arbitrary dimension
Manuel Asorey, Lesław Rachwał, Ilya L. Shapiro +1
The conventional model of the gauge vector field is invariant under the local conformal symmetry only in the four-dimensional space (). Conformal generalization to an arbitrary…
Renormalization Group in Six-derivative Quantum Gravity
Leslaw Rachwal, Leonardo Modesto, Aleksandr Pinzul +1
The exact one-loop beta functions for the four-derivative terms (Weyl tensor squared, Ricci scalar squared and the Gauss-Bonnet) are derived for the minimal six-derivative quantum…
Asymptotic freedom and higher derivative gauge theories
M. Asorey, F. Falceto, L. Rachwal
The ultraviolet completion of gauge theories by higher derivative terms can dramatically change their behavior at high energies. The requirement of asymptotic freedom imposes very…
On the regularization of Lifshitz-type field theories
Alfio Bonanno, Miok Park, Lesław Rachwał +1
We consider Lifshitz-type scalar theories with explicit breaking of the Lorentz symmetry that, in addition, exhibit anisotropic scaling laws near the ultraviolet fixed point. Using…
Dark side of Weyl gravity
Petr Jizba, Lesław Rachwał, Stefano G. Giaccari +1
With the help of a functional renormalization group, we study the dynamical breakdown of scale invariance in quantum Weyl gravity by starting from the UV fixed point that we assume…
Effective Action from the Functional Renormalization Group
Nobuyoshi Ohta, Leslaw Rachwal
We study the quantum gravitational system coupled to a charged scalar, Dirac fermions, and electromagnetic fields. We use the "exact" or "functional" renormalization group equation…
Spectral action approach to higher derivative gravity
Ravi Mistry, Aleksandr Pinzul, Lesław Rachwał
We study the spectral action approach to higher derivative gravity. The work focuses on the classical aspects. We derive the complete and simplified form of the purely gravitationa…
Infrared behavior of Weyl Gravity: Functional Renormalization Group approach
Petr Jizba, Leslaw Rachwal, Jaroslav Knap
Starting from an ultraviolet fixed point, we study the infrared behavior of quantum Weyl gravity in terms of a functional renormalization group (RG) flow equation. To do so, we emp…
Conformal Symmetry in Field Theory and in Quantum Gravity
Leslaw Rachwal
Conformal symmetry always played an important role in field theory (both quantum and classical) and in gravity. We present construction of quantum conformal gravity and discuss its…
Unitarity issues in higher derivative field theories
Manuel Asorey, Lesław Rachwał, Ilya Shapiro
We analyze the unitarity properties of higher derivative quantum field theories which are free of ghosts and ultraviolet singularities. We point out that in spite of the absence of…
Finite conformal quantum gravity and spacetime singularities
Leonardo Modesto, Leslaw Rachwal
We show that a class of finite quantum non-local gravitational theories is conformally invariant at classical as well as at quantum level. This is actually a range of conformal ano…
Formation and evaporation of an electrically charged black hole in conformal gravity
Cosimo Bambi, Leonardo Modesto, Shiladitya Porey +1
Extending previous work on the formation and the evaporation of black holes in conformal gravity, in the present paper we study the gravitational collapse of a spherically symmetri…
Finite quantum gravity in dS and AdS spacetimes
Alexey S. Koshelev, K. Sravan Kumar, Leonardo Modesto +1
We hereby study the properties of a large class of weakly nonlocal gravitational theories around the (anti-) de Sitter spacetime background. In particular, we explicitly prove that…
Renormalization group in super-renormalizable quantum gravity
Leonardo Modesto, Leslaw Rachwal, Ilya L. Shapiro
One of the main advantages of super-renormalizable higher derivative quantum gravity models is the possibility to derive exact beta functions, by making perturbative one-loop calcu…