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Multinomial belief networks for healthcare data

Autor: Donker, H. C., Neijzen, D., de Jong, J., Lunter, G. A.

Healthcare data from patient or population cohorts are often characterized by sparsity, high missingness and relatively small sample sizes. In addition, being able to quantify uncertainty is often important in a medical context. To address these anal

Externí odkaz: http://arxiv.org/abs/2311.16909

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Quantum dynamics of a small symmetry breaking measurement device

Autor: Donker, H. C., De Raedt, H., Katsnelson, M. I.

Publikováno v: Ann. Phys. 396, 137 (2018)

A quantum measuring instrument is constructed that utilises symmetry breaking to enhance a microscopic signal. The entire quantum system consists of a system-apparatus-environment triad that is composed of a small set of spin-1/2 particles. The appar

Externí odkaz: http://arxiv.org/abs/1804.08151

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Antiferromagnetic order without recourse to staggered fields

Autor: Donker, H. C., De Raedt, H., Katsnelson, M. I.

Publikováno v: Phys. Rev. B 98, 014416 (2018)

In the theory of antiferromagnetism, the staggered field---an external magnetic field that alternates in sign on atomic length scales---is used to select the classical N\'eel state from a quantum magnet, but justification is missing. This work examin

Externí odkaz: http://arxiv.org/abs/1711.07738

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Decoherence and pointer states in small antiferromagnets: A benchmark test

Autor: Donker, H. C., De Raedt, H., Katsnelson, M. I.

Publikováno v: SciPost Phys. 2, 010 (2017)

We study the decoherence process of a four spin-1/2 antiferromagnet that is coupled to an environment of spin-1/2 particles. The preferred basis of the antiferromagnet is discussed in two limiting cases and we identify two $\it{exact}$ pointer states

Externí odkaz: http://arxiv.org/abs/1612.03099

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Logical inference approach to relativistic quantum mechanics: derivation of the Klein-Gordon equation

Autor: Donker, H. C., Katsnelson, M. I., De Raedt, H., Michielsen, K.

Publikováno v: Ann. Phys. 372, 74 (2016)

The logical inference approach to quantum theory, proposed earlier [Ann. Phys. 347 (2014) 45-73], is considered in a relativistic setting. It is shown that the Klein-Gordon equation for a massive, charged, and spinless particle derives from the combi

Externí odkaz: http://arxiv.org/abs/1604.07265

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Decoherence wave in magnetic systems and creation of N\'eel antiferromagnetic state by measurement

Autor: Donker, H. C., De Raedt, H., Katsnelson, M. I.

Publikováno v: Phys. Rev. B 93, 184426 (2016)

The interplay between the singlet ground state of the antiferromagnetic Heisenberg model and the experimentally measured N\'eel state of antiferromagnets is studied. To verify the hypothesis [M. I. Katsnelson et al., Phys. Rev. B 63, 212404 (2001)] t

Externí odkaz: http://arxiv.org/abs/1602.04703

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Quantum theory as a description of robust experiments: Application to Stern-Gerlach and Einstein-Podolsky-Rosen-Bohm experiments

Autor: De Raedt, H., Katsnelson, M. I., Donker, H. C., Michielsen, K.

We propose and develop the thesis that the quantum theoretical description of experiments emerges from the desire to organize experimental data such that the description of the system under scrutiny and the one used to acquire the data are separated

Externí odkaz: http://arxiv.org/abs/1506.03373

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