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"Concurrence"
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Competition and antitrust law : a very short introduction
\"Drawing on case studies from the US and the European Union, this Very Short Introduction explores the promise and limitations of competitive market dynamics. In examining the laws and the way they are enforced, Ariel Ezrachi considers the delicate relationship between a free market economy and government intervention, and the fascinating forces of competition that shape modern society.\" --Publisher description.
Book
Universal complementarity between coherence and intrinsic concurrence for two-qubit states
Entanglement and coherence are two essential quantum resources for quantum information processing. A natural question arises of whether there is a direct link between them. In this work, we propose a definition of intrinsic concurrence for two-qubit states. Although the intrinsic concurrence is not a measure of entanglement, it embodies the concurrence of four pure states which are members of a special pure state ensemble for an arbitrary two-qubit state. And we show that intrinsic concurrence is always complementary to first-order coherence. In fact, this relation is an extension of the complementary relation satisfied by two-qubit pure states. Interestingly, we apply the complementary relation in some composite systems composed by a single-qubit state coupling with four typical noise channels respectively, and discover their mutual transformation relation between concurrence and first-order coherence. This universal complementarity provides reliable theoretical basis for the interconversion of the two important quantum resources.
Journal Article
PETER OF PALUDE AND THE FIERY FURNACE
According to most medieval thinkers, whenever something causally acts on another thing, God also acts with it. Durand of St.-Pourçain, an early fourteenth-century Dominican philosopher, disagrees. This paper is about a fourteenth-century objection to Durand’s view, which I will call the Fiery Furnace Objection, as formulated by Durand’s contemporary, Peter of Palude. Although Peter of Palude is not usually regarded as a particularly original thinker, this paper calls attention to one of his more interesting controversies with his fellow friar, while it also clarifies how some medieval thinkers understood the broadly speaking Aristotelian conviction that causes and effects are necessarily related.
Journal Article
The banana : empires, trade wars, and globalization
'The Banana' demystifies the banana trade and its path towards globalization. It reviews interregional relationships in the industry and the changing institutional framework governing global trade, and assesses the roles of such major players as the EU and the WTO.
Book
Antitrust and the Formation of the Postwar World
Today antitrust law shapes the policy of almost every large company, no matter where headquartered. But this wasn't always the case. Before World War II, the laws of most industrial countries tolerated and even encouraged cartels, whereas American statutes banned them. In the wake of World War II, the United States devoted considerable resources to building a liberal economic order, which Washington believed was necessary to preserving not only prosperity but also peace after the war. Antitrust was a cornerstone of that policy. This fascinating book shows how the United States sought to impose—and with what results—its antitrust policy on other nations, especially in Europe and Japan. Wyatt Wells chronicles how the attack on cartels and monopoly abroad affected everything from energy policy and trade negotiations to the occupation of Germany and Japan. He shows how a small group of zealots led by Thurman Arnold, who became head of the Justice Department's Antitrust Division in 1938, targeted cartels and large companies throughout the world: IG Farben of Germany, Mitsui and Mitsubishi of Japan, Imperial Chemical Industries of Britain, Philips of the Netherlands, DuPont and General Electric of the United States, and more. Wells brilliantly shows how subsequently, the architects of the postwar economy—notably Lucius Clay, John McCloy, William Clayton, Jean Monnet, and Ludwig Erhard—uncoupled political ideology from antitrust policy, transforming Arnold's effort into a means to promote business efficiency and encourage competition.
eBook
Chip war : the fight for the world's most critical technology
\"An epic account of the decades-long battle to control what has emerged as the world's most critical resource--microchip technology--with the United States and China increasingly in conflict. You may be surprised to learn that microchips are the new oil--the scarce resource on which the modern world depends. Today, military, economic, and geopolitical power are built on a foundation of computer chips. Virtually everything--from missiles to microwaves, smartphones to the stock market--runs on chips. Until recently, America designed and built the fastest chips and maintained its lead as the #1 superpower. Now, America's edge is slipping, undermined by competitors in Taiwan, Korea, Europe, and, above all, China. Today, as Chip War reveals, China, which spends more money each year importing chips than it spends importing oil, is pouring billions into a chip-building initiative to catch up to the US. At stake is America's military superiority and economic prosperity. Economic historian Chris Miller explains how the semiconductor came to play a critical role in modern life and how the U.S. become dominant in chip design and manufacturing and applied this technology to military systems. America's victory in the Cold War and its global military dominance stems from its ability to harness computing power more effectively than any other power. But here, too, China is catching up, with its chip-building ambitions and military modernization going hand in hand. America has let key components of the chip-building process slip out of its grasp, contributing not only to a worldwide chip shortage but also a new Cold War with a superpower adversary that is desperate to bridge the gap. Illuminating, timely, and fascinating, Chip War shows that, to make sense of the current state of politics, economics, and technology, we must first understand the vital role played by chips\"--Amazon.
Book
Tighter Bounds of Generalized Monogamy and Polygamy Relations
We study generalized monogamy and polygamy relations for concurrence of assistance and negativity of assistance using parametrized bounds in general multi-partite quantum systems. The new method overcomes the shortcomings of previous studies where a method is only good at a particular region. We provide detailed examples to show why the new approach is effective in all regions.
Journal Article
Entanglement Swapping and Swapped Entanglement
Entanglement swapping is gaining widespread attention due to its application in entanglement distribution among different parts of quantum appliances. We investigate the entanglement swapping for pure and noisy systems, and argue different entanglement quantifiers for quantum states. We explore the relationship between the entanglement of initial states and the average entanglement of final states in terms of concurrence and negativity. We find that if initial quantum states are maximally entangled and we make measurements in the Bell basis, then average concurrence and average negativity of final states give similar results. In this case, we simply obtain the average concurrence (average negativity) of the final states by taking the product of concurrences (negativities) of the initial states. However, the measurement in non-maximally entangled basis during entanglement swapping degrades the average swapped entanglement. Further, the product of the entanglement of the initial mixed states provides an upper bound to the average swapped entanglement of final states obtained after entanglement swapping. The negativity work well for weak entangled noisy states but concurrence gives better results for relatively strong entanglement regimes. We also discuss how successfully the output state can be used as a channel for the teleportation of an unknown qubit.
Journal Article
The Politics of European Competition Regulation
The Politics of European Competition Regulation provides an original and theoretically informed account of the political power struggles that have shaped the evolution of European competition regulation over the past six decades.
Applying a critical political economy perspective, this book analyses the establishment and development of competition regulation at European Community and national level since the 1950s. It puts forth the central argument that competition regulation came to reflect the broader shift towards a neoliberal order since the 1980s. Buch-Hansen and Wigger argue that this shift, which took place against the background of the gradual transnationalisation of capitalist production and the economic crisis of the late 1970s, was driven by the European Commission in alliance with the emerging transnational capitalist class.
The authors examine the political responses to the current global economic crisis in the fields of state aid, cartel prosecution and merger control and conclude that an alternative type of competition regulation, which forms part of a much broader transformation of the current socioeconomic order, is needed. This book will be of interest to students and scholars of (global) political economy, European integration and competition law.
eBook