We review the question of whether the fundamental laws of nature limit our ability to probe
arbitrarily short distances. First, we examine what insights can be gained from thought …

Hořava's quantum gravity at a Lifshitz point is a theory intended to quantize gravity by using
traditional quantum field theories. To avoid Ostrogradsky's ghosts, a problem that has been …

A radical new view of the nature of time and the cosmos—“at once entertaining, thought-
provoking, fabulously ambitious and fabulously speculative”(The New York Times Book …

Quantum theory seems to be a universal framework for physical theories. In fact, most of the
interactions found in Nature are already successfully accommodated into this framework …

This book concerns the foundations of Quantum Gravity, in particular from a conceptual point
of view. It provides a self-contained introduction to this topic, resting on particular features of …

The action of loop quantum gravity includes the Holst term and/or the Nieh–Yan term in
addition to the Ricci scalar. These terms are expected to couple nonminimally to the Higgs …

In this paper we have investigated the dynamics of neutral, electrically charged and
magnetized particles around renormalized group improved (RGI) Schwarzschild black hole …

Perturbative quantum gravity starts from prescribing a background metric. That background
metric is then used in order to carry out two separate steps: 1. One splits the nonperturbative …

Quantum gravity effects in effective models of loop quantum gravity, such as loop quantum
cosmology, are encoded in the choice of so-called polymerisation schemes. Physical …

Loop quantum cosmology yields two kinds of quantum corrections to the effective equations
of motion for cosmological perturbations. Here we focus on the holonomy kind and we study …