RT info:eu-repo/semantics/bachelorThesis
T1 Medidas cuánticas en sistemas pre y poseleccionados: la paradoja de las tres cajas
A1 Przeor, Jessica
AB The beauty of quantum mechanics is that it predicts effects that chanllengeour intuition (paradoxes). Niels Bohr, one of the fathers of the theory, saidthat:“the one who is not surprised when they explain quantum mechanichs, isthat he has not understood anything”.All these effects, all these paradoxes are exciting. They are a spiral inwhich one has to enter alone. They are a direct and intimate challenge.When something needs our full attention and nobody can help us, it isalmost certain that we are facing a vicious circle or a paradox. The mostabundant source of strangeness, when dealing with “quantum paradoxes”or certain relativistic phenomena, is that these observations do not seem torespect the laws related with our common sense. All paradoxes arecharming, especially when someone with a basic knowledge of quantummechanics tries to analyze them.In this text it will be analyzed a very interesting paradox, which has beendescribed by Lev Vaidman in [1]. This author apparently described asituation in which one single quantum particle can be found in 2 differentboxes at the same time. To deal with this paradox in detail it is necessaryto understand many concepts of quantum mechanics such as the collapse ofthe system when measured and the idea of pre and post-selected states.For this we will present the so-called ABL rule, which describes theprobabilities made at intermediate times between two other measurements.We will study the paradox of the three boxes and generalize it for the caseof N boxes. Afterwards we will see how this paradox can disappear if wesimply understand it as a typical situation of quantum interference. Forthis we will also relate it to Young’s famous problem of double-slitinterference. Subsequently, another paradox of similar characteristics to theoriginal will be presented and analyzed. Finally, a classic analogy will beexposed for the paradox of the three boxes in which we will highlight thespecial nature of the measurement process in the quantum world.
YR 2019
FD 2019
LK http://riull.ull.es/xmlui/handle/915/14643
UL http://riull.ull.es/xmlui/handle/915/14643
LA es
DS Repositorio institucional de la Universidad de La Laguna
RD 06-may-2024