A short review of loop quantum gravity
An outstanding open issue in our quest for physics beyond Einstein is the unification of
general relativity (GR) and quantum physics. Loop quantum gravity (LQG) is a leading …
general relativity (GR) and quantum physics. Loop quantum gravity (LQG) is a leading …
Coarse graining spin foam quantum gravity—a review
S Steinhaus - Frontiers in Physics, 2020 - frontiersin.org
In quantum gravity, we envision renormalization as the key tool for bridging the gap between
microscopic models and observable scales. For spin foam quantum gravity, which is defined …
microscopic models and observable scales. For spin foam quantum gravity, which is defined …
Primordial black holes in loop quantum cosmology: the effect on the threshold
T Papanikolaou - Classical and Quantum Gravity, 2023 - iopscience.iop.org
Primordial black holes in loop quantum cosmology: the effect on the threshold - IOPscience
Skip to content IOP Science home Accessibility Help Search Journals Journals list Browse …
Skip to content IOP Science home Accessibility Help Search Journals Journals list Browse …
Effective spin foam models for Lorentzian quantum gravity
Making the Lorentzian path integral for quantum gravity well-defined and computable has
been a long standing challenge. In this work we adopt the recently proposed effective spin …
been a long standing challenge. In this work we adopt the recently proposed effective spin …
Mean-field phase transitions in tensorial group field theory quantum gravity
Controlling the continuum limit and extracting effective gravitational physics are shared
challenges for quantum gravity approaches based on quantum discrete structures. The …
challenges for quantum gravity approaches based on quantum discrete structures. The …
Complex critical points and curved geometries in four-dimensional Lorentzian spinfoam quantum gravity
This paper focuses on the semiclassical behavior of the spinfoam quantum gravity in four
dimensions. There has been long-standing confusion, known as the flatness problem, about …
dimensions. There has been long-standing confusion, known as the flatness problem, about …
Complex actions and causality violations: Applications to Lorentzian quantum cosmology
For the construction of the Lorentzian path integral for gravity one faces two main questions:
firstly, what configurations to include, in particular whether to allow Lorentzian metrics that …
firstly, what configurations to include, in particular whether to allow Lorentzian metrics that …
Complex critical points in Lorentzian spinfoam quantum gravity: Four-simplex amplitude and effective dynamics on a double- complex
The complex critical points are analyzed in the four-dimensional Lorentzian Engle-Pereira-
Rovelli-Livine spinfoam model in the large-j regime. For the four-simplex amplitude, taking …
Rovelli-Livine spinfoam model in the large-j regime. For the four-simplex amplitude, taking …
Spinfoams and high-performance computing
Numerical methods are a powerful tool for doing calculations in spinfoam theory. We review
the major frameworks available, their definition, and various applications. We start from …
the major frameworks available, their definition, and various applications. We start from …
Complete Barrett-Crane model and its causal structure
The causal structure is a quintessential element of continuum spacetime physics and needs
to be properly encoded in a theory of Lorentzian quantum gravity. Established spin foam …
to be properly encoded in a theory of Lorentzian quantum gravity. Established spin foam …