ENTANGLEMENT, LOCALITY, AND SEPARABILITY: A TREATISE ON DIFFERENT VIEWPOINTS

2007 ◽  
Vol 05 (01n02) ◽  
pp. 157-167 ◽  
Author(s):  
THOMAS KESSEMEIER ◽  
THOMAS KRÜGER

Within the framework of a statistical interpretation of quantum mechanics, entanglement (in a mathematical sense) manifests itself in the non-separability of the statistical operator ρ representing the ensemble in question. In experiments, on the other hand, entanglement can be detected, in the form of non-locality, by the violation of Bell's inequality Δ ≤ 2. How can these different viewpoints be reconciled? We first show that (non-)separability follows different laws to (non-)locality, and, moreover, it is much more difficult to characterize as long as the mostly employed operational rather than an ontic definition of separability is used. In consequence, (i) "entanglement" has two different meanings which may or may not be realized simultaneously on one and the same ensemble, and (ii) we have to disadvise the use of the common separability definition which is still employed by the majority of the physical community.

Quanta ◽  
2019 ◽  
Vol 8 (1) ◽  
pp. 68-87 ◽  
Author(s):  
Andrea Oldofredi ◽  
Michael Esfeld

Paul Dirac has been undoubtedly one of the central figures of the last century physics, contributing in several and remarkable ways to the development of quantum mechanics; he was also at the centre of an active community of physicists, with whom he had extensive interactions and correspondence. In particular, Dirac was in close contact with Bohr, Heisenberg and Pauli. For this reason, among others, Dirac is generally considered a supporter of the Copenhagen interpretation of quantum mechanics. Similarly, he was considered a physicist sympathetic with the positivistic attitude which shaped the development of quantum theory in the 1920s. Against this background, the aim of the present essay is twofold: on the one hand, we will argue that, analyzing specific examples taken from Dirac's published works, he can neither be considered a positivist nor a physicist methodologically guided by the observability doctrine. On the other hand, we will try to disentangle Dirac's figure from the mentioned Copenhagen interpretation, since in his long career he employed remarkably different—and often contradicting—methodological principles and philosophical perspectives with respect to those followed by the supporters of that interpretation.Quanta 2019; 8: 68–87.


Author(s):  
Sebastian Lecourt

This chapter considers a series of formative debates in British anthropology from the 1840s through the 1860s and uses them to map out the two dominant constructions of religion whose politics the subsequent authors in this study would reinvent. It describes, on the one hand, a liberal and evangelical construction of religion as the common human capacity for spiritual cultivation, and on the other hand a conservative, reactionary model that interpreted religious differences as the expressions of fixed racial identities that neither civilization nor Christianization could erase. In the work of the Oxford philologist F. Max Müller we see how the former model tended to associate religion above all with language. But we can also see the subtle forms of determinism that it contained—an ambiguity that Arnold, Pater, Eliot, and Lang would explore by picturing racialized religion as a resource for liberal self-cultivation.


2021 ◽  
Vol 3 (1) ◽  
pp. 53-67
Author(s):  
Ghenadie Mardari

The phenomenon of quantum erasure exposed a remarkable ambiguity in the interpretation of quantum entanglement. On the one hand, the data is compatible with the possibility of arrow-of-time violations. On the other hand, it is also possible that temporal non-locality is an artifact of post-selection. Twenty years later, this problem can be solved with a quantum monogamy experiment, in which four entangled quanta are measured in a delayed-choice arrangement. If Bell violations can be recovered from a “monogamous” quantum system, then the arrow of time is obeyed at the quantum level.


1966 ◽  
Vol 1 (4) ◽  
pp. 562-579 ◽  
Author(s):  
A. M. Apelbom

Eighteen years after attaining independence Israel remains essentially a common law country. Introduced by the British Mandatory administration to supplement the Ottoman legislation in force at the time of the British occupation of Palestine, the common law has been retained by the Israeli legislator, so far as not modified or replaced by local legislation. But this common law, far from being residual only, also embraces a considerable body of interstitial law developed by two generations of judges, British, Palestinian and Israeli, in the process of applying and interpreting statute law—whether Ottoman, Mandatory or Israeli—according to common law methods. On the other hand the importation of common law institutions was neither wholesale nor systematic and in a number of fields no clear line of demarcation can be drawn between domestic and English law.


2021 ◽  
Vol 60 (3-4) ◽  
pp. 363-398

Abstract The Roman father and son of the same name, P. Decius Mus, became paragon heroes by deliberately giving their lives in battle that Rome might win over a fierce enemy. Both engaged in a special ritual called devotio (from which our word “devotion” derives) to offer themselves to the gods of the Underworld, with whom regular people have very little interaction and to whom they rarely sacrifice. While the Mus family is the most famous for this act, it turns out the willingness to sacrifice oneself for Rome frequently occurs within stories of great patriots, including the story of Horatius Cocles, Mettius Curtius, Atilius Regulus, and even the traitors Coriolanus and Tarpeia. Romans regarded self-sacrifice as a very high, noble endeavor, whereas they loathed and persecuted practitioners of human sacrifice. It is therefore quite amazing to read that the Romans thrice engaged in state-sponsored human sacrifice, a fact they rarely mention and generally forget. The most famous enemy practitioners of human sacrifice were the Druids, whom the Romans massacred on Mona Island on Midsummer Night's Eve, but the Carthaginians, the Germans, the Celts, and the Thracians all infamously practiced human sacrifice. To Romans, the act of human sacrifice falls just short of cannibalism in the spectrum of forbidden practices, and was an accusation occasionally thrown against an enemy to claim they are totally barbaric. On the other hand, Romans recognized their own who committed acts of self-sacrifice for the good of the society, as heroes. There can be no better patriot than he who gives his life to save his country. Often the stories of their heroism have been exaggerated or sanitized. These acts of heroism often turn out to be acts of human sacrifice, supposedly a crime. It turns out that Romans have a strong legacy of practicing human sacrifice that lasts into the historic era, despite their alleged opposition to it. Numerous sources relate one story each. Collecting them all makes it impossible to deny the longevity of human sacrifice in Rome, although most Romans under the emperors were probably unaware of it. The paradox of condemning but still practicing human sacrifice demonstrates the nature of Roman religion, where do ut des plays a crucial role in standard sacrifice as well as in unpleasant acts like human sacrifice. Devotio was an inverted form of sacrifice, precisely because it was an offering to the gods of the Underworld, rather than to Jupiter or the Parcae. Romans may have forsaken devotio, but they continued to practice human sacrifice far longer than most of us have suspected, if one widens the current narrow definition of human sacrifice to include events where a life is taken in order to bring about a better future for the commonwealth, appease the gods, or ensure a Roman victory in battle.


2020 ◽  
Vol 28 (2) ◽  
pp. 173-186
Author(s):  
Sebastian Koch

Summary A (di)graph without parallel edges can simply be represented by a binary relation of the vertices and on the other hand, any binary relation can be expressed as such a graph. In this article, this correspondence is formalized in the Mizar system [2], based on the formalization of graphs in [6] and relations in [11], [12]. Notably, a new definition of createGraph will be given, taking only a non empty set V and a binary relation E ⊆ V × V to create a (di)graph without parallel edges, which will provide to be very useful in future articles.


2006 ◽  
Vol 34 (101) ◽  
pp. 122-139
Author(s):  
Thor Grünbaum

Action in Narratology, Literature, and LifeIn this article I argue that the representation of simple, bodily action has the function of endowing the narrative sequence with a visualizing power: It makes the narrated scenes or situations ready for visualization by the reader or listener. By virtue of this visualizing power or disposition, these narrated actions disrupt the theoretical divisions, on the one hand, between the narrated story and the narrating discourse, and on the other hand, between plot-narratology and discourse-narratology. As narrated actions they seem to belong to the domain of plot-narratology, but in so far as they serve an important visualizing function, these narrated actions have a communicative function and as such they can be said to belong to the domain of discourse-narratology. In a first part of the article, I argue that a certain type of plot-narratology, due to its retrospective epistemology and abstract definition of action, is unable to conceive of this visualizing function. In a second part, I argue that discourse-narratology fares no better since the visualizing function is independent of voice and focalization. In a final part, I sketch a possible account of the visualizing function of simple actions in narratives.


2015 ◽  
pp. 153
Author(s):  
Gordana Matic

<div class="WordSection1"><p><strong>Resumen</strong></p><p>La fábula ha tenido desde siempre una función retórica e ilustrativa que se ha manifestado a lo largo de la historia de modo dual: mostraba para enseñar, lo que muchas veces implicaba el componente moralizador, o para criticar. Mientras se empeñaba en conseguir una de las dos intencionalidades, o las dos simultáneamente, ha podido ser revestida de un tono humorístico, burlón, irónico o sarcástico. Partiendo de las observaciones sobre el género de Fedro, Rodríguez Adrados o Mireya Camurati, en este trabajo nos proponemos analizar una selección de fábulas clásicas, medievales, dieciochescas y decimonónicas, para demostrar que el aspecto crítico e incluso subversivo del género se mantiene abiertamente activo aun en las épocas en las que se potencia su intención didáctico-moralizante.</p><p>Palabras clave: fábula, definiciones del género, estudio diacrónico, aspecto crítico, aspecto didáctico-moralizante</p><p> </p><p><strong>Abstract</strong></p><p>The fable has always had a rhetoric and illustrative function that manifested itself during its long history in two different ways: on one hand, it represented an example in order to teach, which usually implied the moral component, or on the other hand, to criticize. While it strived to achieve one of these intentions, or sometimes both simultaneously, it could have been written in a humorous, mocking, ironic or sarcastic tone. In this paper, we analyze a selection of classical and medieval, 18th and 19th century fables written in Spanish, with definitions proposed by Phaedrus, Rodríguez Adrados and Mireya Camurati as starting points, in order to show that the critical aspect of this genre was openly maintained and taken benefit of even in the historical periods when its didactic and moralizing intention was preferred and strongly emphasized.</p></div><p>Key words: fable, definition of genre, diachronic approach, critical aspect, didactic and moral aspect</p><p> </p>


Author(s):  
Walid Abouzeid ◽  
Sharihan Mohamed Aly

This study attempts to investigate the impact of human capital on the common stock's return. The population of the study is Egyptian companies listed at the Egyptian exchange (EGX) due to 2014-2018. The statistical results indicate that there is a general tendency to change common stock's hold return to the corporation's human capital, and it is significant at 0.01 levels. In other terms, it can be stated that the corporation's human capital has a significant impact on common stock's hold return in the Egyptian corporation, and according to Adjusted R-squared the corporation's human capital explain a 57.8% from the change common stock's hold return.so; led to the impact of human capital on creating value of common stock. This can be traced back to investing in "the development and researches" on the other hand besides training, therefore medicine and technology companies get affected through these fields of development researches areas; however companies in industrial and banking sector get impacted by training field.


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