Ricerc@Sapienza

The observation of forward proton scattering in association with lepton pairs (e(+)e(-) + p or mu(+)mu(-) + p) produced via photon fusion is presented. The scattered proton is detected by the ATLAS Forward Proton spectrometer, while the leptons are reconstructed by the central ATLAS detector. Proton-proton collision data recorded in 2017 at a center-of-mass energy of root s = 13 TeV are analyzed, corresponding to an integrated luminosity of 14.6 fb(-1).

A search for new resonances decaying into a pair of jets is reported using the dataset of proton-proton collisions recorded at s = 13 TeV with the ATLAS detector at the Large Hadron Collider between 2015 and 2018, corresponding to an integrated luminosity of 139 fb(-1). The distribution of the invariant mass of the two leading jets is examined for local excesses above a data-derived estimate of the Standard Model background. In addition to an inclusive dijet search, events with jets identified as containing b-hadrons are examined specifically.

The results of Cubitt et al. on the spectral gap problem add a new chapter to the issue of undecidability in physics, as they show that it is impossible to decide whether the Hamiltonian of a quantum many-body system is gapped or gapless. This implies, amongst other things, that a reductionist viewpoint would be untenable. In this paper, we examine their proof and a few philosophical implications, in particular ones regarding models and limitative results.

The paper aims at individuating and analyzing some key features of Epicurus’s doctrine and literary style against the background of the basic notion of mneme. Since he wants to gain a widespread audience and since all the people are in the condition of understanding his message and taking benefits from it, in many occasions he seems to stress the fact that the best way to accomplish the task just described is easily at disposal of his disciples and readers.

This book provides a comprehensive and in-depth study of Physics I,
the first book of Aristotle’s foundational treatise on natural philosophy.
While the text has inspired a rich scholarly literature, this is the first
volume devoted solely to it to have been published for many years,
and it includes a new translation of the Greek text. Book I introduces
Aristotle’s approach to topics such as matter and form, and discusses
the fundamental problems of the study of natural science, examining

The essay addresses the general issues of the role, structure and status of Physics I. First, I seek to clarify the sense in which Physics I is the beginning of Aristotle’s physical project. I argue that, although Physics I’s inquiry is of a scientific and physical kind, it is a relatively free-standing treatise, which plays an introductory role aimed at, as it were, setting the scene for the project as a whole. I highlight various clues that show Physics I’s introductory role: the way in which it describes the central object of natural science (i.e.

The focus of this chapter is Aristotle’s resolution of Parmenides’ argument for monism in Physics I 3, in particular the role that this resolution plays in Physics I and its philosophical meaning. It argues that one of Aristotle’s principal aims is to construe a theory of principles that, unlike those of his predecessors, is correct, because it is built (among other things) by solving some major problems left unresolved by his predecessors.