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Quantum theory and determinism
 QUANTUM STUD.: MATH. FOUND.
, 2014
"... Historically, appearance of the quantum theory led to a prevailing view that Nature is indeterministic. The arguments for the indeterminism and proposals for indeterministic and deterministic approaches are reviewed. These include collapse theories, Bohmian Mechanics and the manyworlds interpretat ..."
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Historically, appearance of the quantum theory led to a prevailing view that Nature is indeterministic. The arguments for the indeterminism and proposals for indeterministic and deterministic approaches are reviewed. These include collapse theories, Bohmian Mechanics and the manyworlds interpretation. It is argued that ontic interpretations of the quantum wave function provide simpler and clearer physical explanation and that the manyworlds interpretation is the most attractive since it provides a deterministic and local theory for our physical Universe explaining the illusion of randomness and nonlocality in the world we experience.
Quantum mechanics as classical physics
, 2014
"... Here I explore a novel nocollapse interpretation of quantum mechanics which combines aspects of two familiar and welldeveloped alternatives, Bohmian mechanics and the manyworlds interpretation. Despite reproducing the empirical predictions of quantum mechanics, the theory looks surprisingly class ..."
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Here I explore a novel nocollapse interpretation of quantum mechanics which combines aspects of two familiar and welldeveloped alternatives, Bohmian mechanics and the manyworlds interpretation. Despite reproducing the empirical predictions of quantum mechanics, the theory looks surprisingly classical. All there is at the fundamental level are particles interacting via Newtonian forces. There is no wave function. However, there are many worlds. On the face of it, quantum physics is nothing like classical physics. Despite its oddity, work in the foundations of quantum theory has provided some palatable ways of understanding this strange quantum realm. Most of our best theories take that story to include the existence of a very nonclassical entity: the wave function. Here I offer an alternative which combines elements of Bohmian mechanics and the manyworlds interpretation to form a theory in which there is no wave function. According to this theory, all there is at the fundamental level are particles interacting via Newtonian forces. In this sense, the theory is classical. However, it is still undeniably strange as it posits the existence of a large but finite collection of worlds, each completely and utterly real. When an experiment is conducted, every result with appreciable Born Rule probability does actually occur in one of these worlds. Unlike the many worlds of the manyworlds interpretation, these worlds are fundamental, not emergent; they are interacting, not causally isolated; and they never branch. In each of these worlds, particles follow welldefined trajectories and move as if they were being guided by a wave function in the familiar Bohmian way. In fact, their trajectories are determined by a combination of intra and interworld forces. In this paper I will not attempt to argue that this theory is unequivocally superior to its competitors. Instead, I would like to establish it as a surprisingly successful alternative which deserves attention and development, hopefully one day meriting inclusion among the list of promising realist responses to the measurement problem. 1 ar