This book aims to present a pedagogical and self-consistent treatment of the canonical approach to Quantum Gravity, starting from its original formulation to the most recent developments in the field.We start with an innovative and enlightening introduction to the formalism and concepts on which General Relativity has been built, giving all the information necessary in the later analysis. A brief sketch of the Standard Cosmological Model describing the Universe evolution is also given alongside the analysis of the inflationary mechanism. After deepening the fundamental properties of constrained dynamic systems, the Lagrangian approach to the Einsteinian Theory is presented in some detail, underlining the parallelism with non-Abelian gauge theories. Then, the basic concepts of the canonical approach to Quantum Mechanics are provided, focusing on all those formulations which are relevant for the Canonical Quantum Gravity problem. The Hamiltonian formulation of General Relativity and its constrained structure is then analyzed by comparing different formulations. The resulting quantum dynamics, described by the Wheeler-DeWitt equation, is fully discussed in order to outline its merits and limits. Afterwards, the reformulation of Canonical Quantum Gravity in terms of the Ashtekar-Barbero-Immirzi variables is faced by a detailed discussion of the resulting Loop Quantum Gravity Theory. Finally, we provide a consistent picture of canonical Quantum Cosmology by facing the main features of the Wheeler-DeWitt equation for the homogeneous Bianchi models and then by a detailed treatment of Loop Quantum Cosmology, including very recent developments.
On October 1922 Mussolini became head of the Italian government, a situation that would last for twenty years. That power was obtained was largely due to the widespread violence perpetrated by blackshirts throughout Italy (squadristi). Violence however did not end. Old and new blackshirts played a major role in making Italy a fascist country. Contrary to the claims of many scholars that have depicted blackshirts after the March on Rome only as troublemakers for Mussolini, the book shows that they played a crucial role in establishing a full and totalitarian dictatorship. Squadristi carried out processes of fascistisation, crushed opponents and convinced bystanders and dubious people, consolidating fascist power in many aspects of social, political and even intimate life. By resorting to new archives, a long chronology and a focus on individual perspectives, this book gives voice to the perpetrators of fascist violence and offers new insights into the lives of squadristi throughout the dictatorship, outlining their beliefs, outlooks and expectations. The book shows that post-1922 squadrismo was not a side effect of Fascism's twenty-year history. On the contrary, violence represents one of the essential components of any definition of Italian Fascism.
This book investigates the economic, intellectual and political history of late medieval and early modern Genoa and the historical origins of the Genoese presence in the Spanish Atlantic. Salonia describes Genoa’s late medieval economic expansion and commercial networks through several case studies, from the Black Sea to southern England, and briefly compares it to the state-run military expansion of Venice’s empire. The author links the adaptability and entrepreneurial skills of Genoese merchants and businessmen to the constitutional history of the Genoese commune and to the specific idea of freedom progressively protected by its constitutions and embodied by institutions like the Bank of St. George. Moreover, this book offers an unprecedented account of the actions with which Ferdinand the Catholic protected Genoese merchants in his dominions and of the later, mutual understanding between the Genoese community and emperor Charles V during the Italian Wars, and in particular during the 1520s. These developments in Hispanic-Genoese diplomatic and economic relations are of great significance. The sixteenth-century Hispanic-Genoese alliance is important to understand the characteristics of Habsburg governance and the resilience of Genoa’s republican conservatism. Genoa’s republicanism (based on private wealth and private arms) contradicts historiographical narratives that assume the inevitability of the emergence of the modern, militarized and centralized state. It also shows the inadequacy of Tuscan-centric historical accounts of Renaissance republicanism. The last chapter of the book reveals the consequences of the 1528 Hispanic-Genoese alliance by considering case studies that illustrate the Genoese presence in the Spanish Americas, from Chile to Mexico, since the early stages of conquest and settlement.
This book highlights the most complete characterization of the Higgs boson properties performed to date in the "golden channel," i.e., decay into a pair of Z bosons which subsequently decay into four leptons. The data collected by the CMS experiment in the so-called Run-II data-taking period of the LHC are used to produce an extensive set of results that test in detail the predictions of the Standard Model. Given the remarkable predictive power of the SM when including the Higgs boson, possible new physics will require even more extensive studies at higher statistics. A massive upgrade of the detectors is necessary to maintain the current physics performance in the harsh environment of the High-Luminosity LHC (HL-LHC) project, expected to start by the end of 2027. The CMS Collaboration will replace the current endcap calorimeters with a High Granularity Calorimeter (HGCAL). The HGCAL will be the very first large-scale silicon-based imaging calorimeter ever employed in a high-energy physics experiment. This book presents the results of the analysis of the test beam data collected with the first large-scale prototype of the HGCAL. The results of this analysis are used to corroborate the final design of the HGCAL and its nominal physics performance expected for the HL-LHC operations.
Sette racconti, per sette diversi modi – horror! – di intendere l'amore. Zombie, vampiri, streghe e altri mostri, più o meno umani, in una raccolta breve ma intensa così come lo è la festa più amata/odiata dell'anno.
Seconda raccolta di Natale marchiata Nero Press e curata da Babbo Natale. Ancora una volta Santa Claus ci mostra il suo lato folle e un po' splatter nell'amalgamare la sua antologia natalizia. In questo volume otto racconti dall'animo nero stravolgeranno la vostra idea che a Natale si sia tutti più buoni. Ogni cosa ha il suo lato oscuro ed è così anche per la festa più importante dell'anno.
La Summer of Love è stata, per una generazione, un periodo storico di grande importanza, un inno alla libertà, alla pace, che ha visto il ribaltamento delle regole e un modo di pensare nuovo e anticonformista. In questa raccolta, la Summer of Love diventa Summer of Blood, perché i racconti che la compongono sono ambientati tutti negli anni 60 e, in essi, il sangue la fa da padrone, mescolandosi ai fiori, alle droghe e agli atti di estrema libertà di una generazione che ha fatto epoca. La postfazione di Biancamaria Massaro sulla Family e Charles Manson completa il quadro di questo volume dal sapore dolceamaro e dai tratti vintage.
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