Even though the Bohmian trajectories given by integral curves of the conserved Klein-Gordon current may involve motions backwards in time, the natural relativistic probability density of particle positions is well-defined. The Bohmian theory predicts subtle deviations from the statistical predictions of more conventional formulations of quantum theory, but it seems that no present experiment rules this theory out. The generalization to the case of many particles or strings is straightforward, provided that a preferred foliation of spacetime is given.

Bosonic and fermionic particle currents can be introduced in a more unified way, with the cost of introducing a preferred spacetime foliation. Such a unified treatment of bosons and fermions naturally emerges from an analogous superstring current, showing that the preferred spacetime foliation appears only at the level of effective field theory, not at the fundamental superstring level. The existence of the preferred spacetime foliation allows an objective definition of particles associated with quantum field theory in curved spacetime. Such an (...) objective definition of particles makes the Bohmian interpretation of particle quantum mechanics more appealing. The superstring current allows a consistent Bohmian interpretation of superstrings themselves, including a Bohmian description of string creation and destruction in terms of string splitting. The Bohmian equations of motion and the corresponding probabilistic predictions are fully relativistic covariant and do not depend on the preferred foliation. (shrink)

To relax the apparent tension between nonlocal hidden variables and relativity, we propose that the observable proper time is not the same quantity as the usual proper-time parameter appearing in local relativistic equations. Instead, the two proper times are related by a nonlocal rescaling parameter proportional to |ψ|2, so that they coincide in the classical limit. In this way particle trajectories may obey local relativistic equations of motion in a manner consistent with the appearance of nonlocal quantum correlations. To illustrate (...) the main idea, we first present two simple toy models of local particle trajectories with nonlocal time, which reproduce some nonlocal quantum phenomena. After that, we present a realistic theory with a capacity to reproduce all predictions of quantum theory. (shrink)

Since Bohmian mechanics is explicitly nonlocal, it is widely believed that it is very hard, if not impossible, to make Bohmian mechanics compatible with relativistic quantum field theory. I explain, in simple terms, that it is not hard at all to construct a Bohmian theory that lacks Lorentz covariance, but makes the same measurable predictions as relativistic QFT. All one has to do is to construct a Bohmian theory that makes the same measurable predictions as QFT in one Lorentz frame, (...) because then standard relativistic QFT itself guarantees that those predictions are Lorentz invariant. I first explain this in general terms, then I describe a simple Bohmian model that makes the same measurable predictions as the Standard Model of elementary particles, after which I give some hints towards a more fundamental theory beyond standard model. Finally, I present a short story telling how my views of fundamental physics in general, and of Bohmian mechanics in particular, evolved over time. (shrink)

Statistical physics cannot explain why a thermodynamic arrow of time exists, unless one postulates very special and unnatural initial conditions. Yet, we argue that statistical physics can explain why the thermodynamic arrow of time is universal, i.e., why the arrow points in the same direction everywhere. Namely, if two subsystems have opposite arrow-directions at a particular time, the interaction between them makes the configuration statistically unstable and causes a decay towards a system with a universal direction of the arrow of (...) time. We present general qualitative arguments for that claim and support them by a detailed analysis of a toy model based on the baker’s map. (shrink)

A common understanding of quantum mechanics (QM) among students and practical users is often plagued by a number of “myths”, that is, widely accepted claims on which there is not really a general consensus among experts in foundations of QM. These myths include wave-particle duality, time-energy uncertainty relation, fundamental randomness, the absence of measurement-independent reality, locality of QM, nonlocality of QM, the existence of well-defined relativistic QM, the claims that quantum field theory (QFT) solves the problems of relativistic QM or (...) that QFT is a theory of particles, as well as myths on black-hole entropy. The fact is that the existence of various theoretical and interpretational ambiguities underlying these myths does not yet allow us to accept them as proven facts. I review the main arguments and counterarguments lying behind these myths and conclude that QM is still a not-yet-completely-understood theory open to further fundamental research. (shrink)

A common understanding of quantum mechanics (QM) among students and practical users is often plagued by a number of “myths”, that is, widely accepted claims on which there is not really a general consensus among experts in foundations of QM. These myths include wave-particle duality, time-energy uncertainty relation, fundamental randomness, the absence of measurement-independent reality, locality of QM, nonlocality of QM, the existence of well-defined relativistic QM, the claims that quantum field theory (QFT) solves the problems of relativistic QM or (...) that QFT is a theory of particles, as well as myths on black-hole entropy. The fact is that the existence of various theoretical and interpretational ambiguities underlying these myths does not yet allow us to accept them as proven facts. I review the main arguments and counterarguments lying behind these myths and conclude that QM is still a not-yet-completely-understood theory open to further fundamental research. (shrink)

Name der Zeitschrift: Millennium Jahrgang: 13 Heft: 1 Seiten: 211-274.

FROM THE ACTIVITIES OF THE INSTITUTE Olga Nikolić, Deana Jovanović i Igor Cvejić.

Spontaneous intrusive recollections are known to follow emotional events in clinical and non-clinical populations. Previous work in our lab has found that women report more SIRs than men after exposure to emotional films, and that this effect is driven entirely by women in the luteal phase of the menstrual cycle. To replicate and extend this finding, participants viewed emotional films, provided saliva samples for sex hormone concentration analysis, and estimated SIR frequency following film viewing. Women in the luteal phase reported (...) significantly more SIRs than did women in the follicular phase, and SIR frequency significantly correlated with salivary progesterone levels. The results are consistent with an emerging pattern in the literature suggesting that menstrual cycle position of female participants can potently influence findings in numerous cognitive domains. The potential implications of these results for disorders characterized by intrusions, such as post-traumatic stress disorder, are also discussed. (shrink)

The article examines whether countries should legalize euthanasia and assisted suicide. Firstly, context of the debate is provided by defining the key terms and giving the overview of how the debate evolved throughout history. The arguments in favor of legalizing euthanasia and assisted suicide are addressed, namely the argument from autonomy and self–determination and the claim for the “right to die with dignity”. The consequences which were showed to occur in the countries which legalized euthanasia and/or assisted suicide are analyzed, (...) and the case study on the Netherlands and Belgium is made. Finally, the model for the dignity–respecting health–care is proposed followed by the call for bigger accessibility and funding for palliative care. (shrink)

High artistic achievements were repeatedly connected with poetry in the tradition of Western aesthetical thought, and the poetry with eliciting emotions. The same has happened within the tradition of film reviewing and theorising: poetry has been repeatedly evoked as a paradigmatic artistic achievement of particular films. But among the different affective states that can be elicited in humans by arts, attribution of ‘poetry’ typically addresses the eliciting and articulation of particular general moods, not the specific, episodic, short-term emotions. In this (...) paper, specified are the differences among emotions and moods, and how a distinct mood is achieved is demonstrated by the close analysis of the introductory descriptive scene in the film Citizen Kane. However, the crucial question is how very different and heterogeneous stylistic means pointed out in the analysis of the scene could elicit a particular, unique, holistic mood. In short, the answer is given by understanding that in the same way in which the moods selectively regulate our relations toward the world, choosing for the perception mood-congruent features of the world to sustain a particular mood, so the filmmakers choose a repertory of stylistic solutions congruent with the selectivity of the intended mood to elicit it in the immersed film viewer. (shrink)

The Heideggerian question posed here as “what does it mean to dwell in a global age” leaves open, invites even, the possibility of committing two conceptual mistakes from which, depending on the theoretical universe we inhabit, two separate sets of problems arise. On the one hand, if the adverbial “in a global age” is taken to denote a radical historical caesura between “our age” and the age in which the concept was first deployed, one has to prove that the caesura (...) is indeed not only historically operative but legitimate on an ontological level. This would, however, be a futile attempt: there hardly exists an essential, qualitative difference between the ontological regime of “our global age” and the one sketched in Heidegger's 1954 essay “Building Dwelling Thinking.” We have not been blessed by any epochal turns, despite important switches – to move for a second to a different register—in regimes of accumulation. Thus, it may be concluded, the ontological question about the state of “dwelling in a precarious age” has already been posed and answered by Heidegger himself—from an ontological perspective, he is our contemporary. And of course, to such question there can in fact be only one answer: it is the same “metaphysics” that has precluded the possibility of “dwelling” throughout modernity that gave rise to our age as global. But then to avoid the mistake sketched out above and the repetition of an already accomplished analysis, the question as it is posed for us here should be taken as a politicization of the original concept, foreign to a puritanically ontological Heideggerian diagnostics, although building on its foundations: what is to be done historically at this moment to enter “dwelling”? (shrink)

Книга написана для думающих и критических мыслящих граждан, ответственных и национально ориентированных политиков, ученых, общественных деятелей и особенно - для целеустремленных и ищущих свой путь в жизни молодых людей.

Najnovija enciklika pape Benedikta XVI Caritas in veritate, kao i prethodne enciklike posvećene socijalnoj tematici, najreprezentativniji su dio opusa katoličkog socijalnog nauka koji u svijetlu judeo-kršćanske Objave i općih načela kršćanske filozofije raščlanjuje aktualne svjetske društvene prilike.U članku se razložila prožetost socijalnog nauka Crkve filozofijom te ukazalo na metafizičke specifičnosti te filozofije, koja sačinjava, kako se je pokazalo, filozofski okvir enciklike Caritas in veritate. Analizom logike filozofskog diskursa Benedikta XVI koja inkorporira, u taj filozofski okvir, načelo besplatnosti kao izraz ljudskog (...) bratstva, nastojalo se ukazati na doprinos enciklike Caritas in veritate aktualnim promišljanjima filozofije globalizacije.The latest encyclical letter by the Pope Benedict XVI Caritas in veritate, similar to the former encyclicals dedicated to social issues, is the most representative part of the Catholic social teaching which analyses current world issues in the light of Judeo-Christian Revelation and general principles of Christian philosophy.This article has expounded the philosophical background of Roman Catholic social teaching and indicated metaphysical peculiarities of that philosophy which builds, as it is shown, the philosophical foundation of the encyclical Caritas in veritate. By analyzing the logic of Benedict’s philosophical discourse, which in that philosophical frame includes the principle of gratuitousness as the expression of human fraternity, we tried to show the contribution of Caritas in veritate encyclical letter to current philosophical thought about globalization. (shrink)

U članku pod gornjim naslovom su sličnosti i razlike metafizičkih počela Aristotela i Tome Akvinskog iskazane analizom argumentacije koja je sržna za obje ove metafizike: o postojanju Nepokretnog pokretača, Čistog akta. Tom analizom je pokazano da, iako im argumentacija ima istu logičku strukturu i isto polazište – promjenu bića – ipak ih je razlika u shvaćanju metafizičkih počela samog bića dovela do različitih zaključaka. Tako je ovdje pokazano da je za Aristotelovu metafiziku supstancije zadnja zbiljnost bića supstancijalna forma, koje svoje (...) zadnje utemeljenje ima u Čistom aktu, Nepokretnom pokretaču, dok za metafiziku bitka Tome Akvinskog zadnja zbiljnost bića jest bitak, koji svoje zadnje utemeljenje ima također u Čistom aktu, ali koji je shvaćen kao Čisti akt bivstvovanja, Subzistentni bitak. Stoga je za Aristotela Čisti akt isključivo oblikovatelj ostale stvarnosti ukoliko je svršni uzrok te nema, niti može imati, kao Nepokretni pokretač, ikakav drugi uzročni utjecaj na ostalu stvarnost, dok je za Tomu Akvinskog Nepokretni pokretač nužno Čisti akt bivstvovanja čije djelovanje je stvaranje.In this article the similarities and differences of Aristotle’s and Thomas Aquinas’ metaphysical principles are set forth by analyzing the core arguments of their metaphysics: principally, those concerning the existence of the Unmoved Mover, also called Pure Act. The analysis shows that although their arguments have the same logical structure and the same starting point – the fact that beings change – different conceptions of the metaphysical principles of being nevertheless lead to different conclusions. Therefore, this article shows that within Aristotle’s metaphysics of substance, the ultimate actuality is the substantial form which has its last ground in Pure Act, the Unmoved Mover. On the other hand, Thomas Aquinas believes that the ultimate actuality is existence, which also has its last ground in Pure Act, but the Act of Existence, or Subsistent Existence. Therefore, Aristotle’s Pure Act is a mere giver of forms and the final cause of reality. This Pure Act does not have, nor it can have any other causal influence on the rest of reality, while Aquinas’ Unmoved Mover is necessarily the Pure Act of Existence whose activity we call creation. (shrink)

Recently, swimming-style colour synaesthesia was introduced as a new form of synaesthesia. A synaesthetic Stroop test was used to establish its genuineness. Since Stroop interference can occur for any type of overlearned association, in the present study we used a modified Stroop test and psychophysiological synaesthetic conditioning to further establish the genuineness of this form of synaesthesia. We compared the performance of a swimming-style colour synaesthete and a control who was trained on swimming-style colour associations. Our results showed that behavioural (...) aspects of swimming-style colour synaesthesia can be mimicked in a trained control. Importantly, however, our results showed a psychophysiological conditioning effect for the synaesthete only. We discuss the theoretical relevance of swimming-style colour synaesthesia according to different models of synaesthesia. We conclude that swimming-style colour synaesthesia is a genuine form of synaesthesia, can be mimicked behaviourally in non-synaesthetes, and is best explained by a re-entrant feedback model. (shrink)

Bioethical contents in the Croatian educational system are taught not only at the university level, but also in secondary schools. Namely, in 1995, as an alternative to confessional religious teaching, the Ethics was introduced as a separate school subject. Present teaching program of Ethics came into the force in 2003. Ethics is taught during all the four years of secondary schools, while the third year is dedicated to bioethical topics only. This presentation will firstly try to explain the context of (...) ethics and bioethics education in secondary schools in Croatia ; afterwards the teaching program of Ethics will be presented, with an accent on bioethical contents ; and finally, we will point to some problems with which the teaching of ethics and bioethics at this educational level is confronted. (shrink)

Namjera je ovog članka da se skicira portret Ante Pažanina kao filozofa, istraživača i autora, te kao profesora, prevoditelja i javnoga djelatnika, odnosno da se kaže nešto ne samo o njegovu djelu nego i o njegovu liku. U tom smislu, članak se više oslanja na reminiscencije na Pažaninovu predavačku djelatnost negoli na istraživanje njegova filozofskog opusa, iako se naglašavaju ključna uporišta njegove filozofije . Zaključuje se kako je glavna značajka Pažaninova djela – živi dijalog sa suvremenicima i misliteljima prohujalih vremena, (...) koji su zahvaljujući njegovu pristupu također postajali suvremenima – bila trajno prisutna i u njegovoj profesorskoj djelatnosti.The intention of this paper is to sketch a portrait of Ante Pažanin as a philosopher, researcher and author, as well as a professor, translator and public servant, i.e. to speak not only about his work but also his figure. In this sense, the paper relies more on reminiscences on Pažanin’s lecturing activities than on research of his philosophical works, although the key strongholds of his philosophy are emphasised. It is concluded that the main characteristic of Pažanin’s work – live dialogue with contemporary thinkers as well as those of the past times, who also became contemporary by virtue of his approach – was permanently present in his professorial activities. (shrink)