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6778 results in Communications and signal processing

Page 26 of 339

  • 9 - Composite Quantum Systems and Entanglement

  • from Part II - The Principles of Quantum Theory
  • Charis Anastopoulos, University of Patras, Greece
  • Book:
    Quantum Theory
    Published online:
    06 October 2023
    Print publication:
    31 August 2023, pp 218-247

  • Summary

    The composition of subsystems in quantum theory is defined in terms of a mathematical operation known as the tensor product. We proceed to explain this concept, and to show how it fits in the Hilbert space calculus.

  • 7 - Time Evolution

  • from Part II - The Principles of Quantum Theory
  • Charis Anastopoulos, University of Patras, Greece
  • Book:
    Quantum Theory
    Published online:
    06 October 2023
    Print publication:
    31 August 2023, pp 169-198

  • Summary

    In Chapter 2, we saw that the nascent quantum theory was divided between two different descriptions of time evolution.

  • 4 - Operators I

  • from Part II - The Principles of Quantum Theory
  • Charis Anastopoulos, University of Patras, Greece
  • Book:
    Quantum Theory
    Published online:
    06 October 2023
    Print publication:
    31 August 2023, pp 75-104

  • Summary

    Given the description of a quantum state in terms of Hilbert space vectors, physical magnitudes (Heisenberg’s matrices) correspond to linear operators on the Hilbert space. A linear operator (or simply, operator) is a linear map of a Hilbert space to itself.

Page 26 of 339