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  1. “The book is intended as the main text for an undergraduate course on the foundations of quantum physics, but it would also serve well as a supplemental text in a regular undergraduate quantum mechanics course. … Reading this book should be a priority for all physicists who want to deepen their understanding of their most fundamental theory.” (Jean Bricmont, Physics Today, April, 2018)

  2. Heisenberg developed the modern matrix formulation of quantum theory in 1925; he was 24 years old at the time. A few months later Schrödinger’s developed wave mechanics based on de Broglie’s concept of wave-particle duality. The matrix mechanics, and wave mechanics, quantum theories are radically different.

  3. 14. Feb. 2023 · In contrast to most physical theories, quantum theory was not grounded in fundamental physical principles until now. Since its beginning, an underlying axiomatic mathematical formalism of the theory (based on Hermitian operators and their corresponding eigenvectors and eigenvalues, mainly developed by Dirac and von Neuman [ 28 , 40 ]) has been known.

  4. Quantum physics and Einstein’s theory of general relativity are the two solid pillars that underlie much of modern physics. Understanding how these two well-established theories are related remains a central open question in theoretical physics. Over the last several decades, efforts in this direction have led to a broad range of new physical ...

  5. 4. Dez. 2023 · The foundation of modern physics rests upon two fundamental theories: quantum theory and Einstein’s theory of general relativity. Quantum theory governs the behavior of the smallest particles in ...

  6. 23. März 2024 · Quantum mechanics is a theory that deals with the most fundamental bits of matter, energy and light and the ways they interact with each other to make up the world. This landmark theory originated in the early 20th century and is finding many real-world applications in the 21st century. Applying quantum mechanics in the laboratory, Argonne ...

  7. Quantum Theory and the Uncertainty Principle. Quantum theory (otherwise known as quantum physics or quantum mechanics) is one of the two main planks of modern physics, along with general relativity, and between them the two theories claim to explain virtually everything about the universe. General relativity gives us our picture of the very big ...