Ward Struyve

Centre for Logic and Philosophy of Science (CLPS)
Celestijnenlaan 200d - box 2415
3001 Leuven
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query=user:U0060284 year:[2014 TO 2025] &institution=lirias&from=1&step=20&sort=scdate
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  • journal-article
    Das, Siddhant;Deckert, Dirk-Andre;Kellers, Leopold;Krekels, Simon;Struyve, Ward; 2025. Double-slit experiment revisited. Annals Of Physics; 2025; Vol. 479
    LIRIAS4240698
    description

    Publisher: Elsevier Masson
    Accepted
  • thesis-dissertation
    Struyve, Ward; 2024. Time, Space-Time and Ontology.
    LIRIAS4154725
    description
    This thesis deals with various questions concerning the nature of time and space-time in relation to ontological aspects, ranging from questions about space-time symmetries, to the disappearance of time in canonical quantum gravity. After an introductory chapter, we start in Chapter 2 with the question whether classical electrodynamics and non-relativistic quantum mechanics are time reversal invariant in the sense of Albert and Callender. They claimed they are not, but we will argue that the answer depends on the choice of ontology. With a suitable ontology, these theories are invariant under time reversal. In Chapter 3, we turn to quantum mechanics in the special-relativistic setting, in Minkowski space-time, and consider the possibility of a Lorentz invariant formulation, investigating what exactly should be meant by serious Lorentz invariance. We will consider two candidate notions of serious Lorentz invariance and use them to evaluate some Lorentz invariant Bohmian and spontaneous collapse models (which are precise versions of quantum mechanics). While these notions might still not capture exactly what serious Lorentz invariance should be, they clarify what aspects of relativity theory (in addition to locality) might need to be given up in quantum theory. Chapter 4 investigates the possibility of deriving a theory from an action principle. For such theories, Noether's (first) theorem establishes a link between continuous symmetries of the action (which are also dynamical symmetries) and conserved quantities. By introducing auxiliary variables, an action can always be formulated. We will present a particularly interesting way of doing so, which turns the theory into a gauge theory, with the auxiliary variables as gauge variables. Chapter 5 concerns the justification of quantum equilibrium in Bohmian mechanics. The usual Born rule statistics of standard quantum theory is recovered in quantum equilibrium. Quantum equilibrium can be justified using a typicality argument. We discuss why, without typicality, dynamical relaxation falls short as a possible justification. In Chapter 6, we move to quantum gravity. Canonical quantum gravity and loop quantum gravity entail that the wave function of the universe is static, leading to the problem of time. We discuss the Bohmian solution to this problem. In Chapter 7, we discuss how according to Bohmian mechanics, there are the desired quantum fluctuations in the early universe, while the undesired fluctuations in the late universe, which give rise to the Boltzmann-brain problem, are absent. We conclude in Chapter 8.

    Published
  • journal-article
    Krekels, Simon;Maes, Christian;Meerts, Kasper;Struyve, Ward; 2024. Zig-zag dynamics in a Stern-Gerlach spin measurement. Proceedings Of The Royal Society A-Mathematical Physical And Engineering Sciences; 2024; Vol. 480; iss. 2285
    LIRIAS4152263
    description

    Publisher: Royal Society, The
    Published
  • chapter
    Struyve, Ward; 2024. The Bohmian solution to the problem of time. Physics and the Nature of Reality; 2024; Vol. 215; pp. 203 - 215 Publisher: Springer
    LIRIAS4144111
    description


    Published
  • journal-article
    Struyve, Ward; 2023. Scope of the action principle. Philosophy of Physics (PoP); 2023; Vol. 1; iss. 1; pp. 1 - 14
    LIRIAS4144109
    description

    Publisher: LSE Press
    Published
  • journal-article
    Frumkin, Valeri;Darrow, David;Bush, John WM;Struyve, Ward; 2022. Real surreal trajectories in pilot-wave hydrodynamics. Physical Review A; 2022; Vol. 106; iss. 1
    LIRIAS3897044
    description

    Publisher: American Physical Society
    Published
  • journal-article
    Maes, Christian;Meerts, Kasper;Struyve, Ward; 2022. Diffraction and interference with run-and-tumble particles. Physica A-Statistical Mechanics And Its Applications; 2022; Vol. 598
    LIRIAS3820323
    description

    Publisher: Elsevier
    Published
  • journal-article
    Goldstein, Sheldon;Struyve, Ward;Tumulka, Roderich; 2022. The Bohmian Approach to the Problems of Cosmological Quantum Fluctuations. British Journal For The Philosophy Of Science; 2022
    LIRIAS4144113
    description

    Publisher: Oxford University Press (OUP)
    Accepted
  • journal-article
    Struyve, Ward; 2022. Time-reversal invariance and ontology. British Journal For The Philosophy Of Science; 2022
    LIRIAS4144106
    description

    Publisher: Oxford University Press (OUP)
    Accepted
  • journal-article
    Deckert, Dirk-Andre;Kellers, Leopold;Norsen, Travis;Struyve, Ward; 2021. Comparison of the mean field and Bohmian semi-classical approximations to the Rabi model. International Journal Of Modern Physics B; 2021; Vol. 35; iss. 26
    LIRIAS3633508
    description

    Publisher: World Scientific Publishing
    Published
  • journal-article
    Das, Siddhant;Struyve, Ward; 2021. Questioning the adequacy of certain quantum arrival-time distributions. Physical Review A; 2021; Vol. 104; iss. 4
    LIRIAS3623291
    description

    Publisher: American Physical Society
    Published
  • journal-article
    Maes, Christian;Meerts, Kasper;Struyve, Ward; 2021. Wave mechanics for gravity with point-particles. Classical And Quantum Gravity; 2021; Vol. 38; iss. 17
    LIRIAS3508419
    description

    Publisher: IOP Publishing
    Published
  • journal-article
    Struyve, Ward; 2021. Wheeler-DeWitt quantization for point-particles. General Relativity And Gravitation; 2021; Vol. 53; iss. 3
    LIRIAS3421665
    description

    Publisher: Springer (part of Springer Nature)
    Published
  • chapter
    Dürr, Detlef;Struyve, Ward; 2021. Typicality in the Foundations of Statistical Physics and Born’s Rule. Do Wave Functions Jump? Perspectives of the Work of GianCarlo Ghirardi; 2021; Vol. 198; pp. 35 - 43 Publisher: Springer; Cham
    LIRIAS3274931
    description


    Published
  • journal-article
    Duerr, Detlef;Struyve, Ward; 2020. Quantum Einstein equations. Classical And Quantum Gravity; 2020; Vol. 37; iss. 13
    LIRIAS3081361
    description

    Publisher: IOP Publishing
    Published
  • journal-article
    Struyve, Ward; 2020. Semi-classical approximations based on Bohmian mechanics. International Journal Of Modern Physics A; 2020; Vol. 35; iss. 14
    LIRIAS3068815
    description

    Publisher: World Scientific Publishing
    Published
  • journal-article
    Demaerel, Thibaut;Maes, Christian;Struyve, Ward; 2020. Cosmic acceleration from quantum Friedmann equations. Classical And Quantum Gravity; 2020; Vol. 37; iss. 8
    LIRIAS3015111
    description

    Publisher: IOP Publishing
    Published
  • journal-article
    Demaerel, Thibaut;Struyve, Ward; 2019. Elimination of cosmological singularities in quantum cosmology by suitable operator orderings. Physical Review D; 2019; Vol. 100; iss. 4
    LIRIAS2836451
    description

    Publisher: American Physical Society
    Published
  • chapter
    Pinto-Neto, Nelson;Struyve, Ward; 2019. Bohmian Quantum Gravity and Cosmology. APPLIED BOHMIAN MECHANICS: FROM NANOSCALE SYSTEMS TO COSMOLOGY, 2ND EDITION; 2019; pp. 607 - 664 Publisher: Jenny Stanford Publ Pte Ltd
    LIRIAS3245514
    description


    Published
  • bookreview
    Struyve, Ward; 2018. Review of Quantum Nonlocality and Reality: 50 Years of Bell's Theorem. Notre Dame Philosophical Reviews; 2018 Publisher: Notre Dame Philosophical Reviews
    LIRIAS2812550
    description


    Published online

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