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States, Logic & Complex Vector Spaces
Builds quantum mechanics from two-state spin systems and Dirac bra-ket algebra rather than messy wave-equation PDEs—the foundation of Susskind's 'Theoretical Minimum'.
This opening lecture of Leonard Susskind's Theoretical Minimum series introduces the foundational concepts of classical information, discrete states, and matrix algebra as a framework for physics. Susskind explains how continuous physical systems like fields and particle positions can be approximated as collections of classical bits, and details how time evolution and reversibility are represented using configuration spaces and matrices.
Referenced inHacker News
Lecture Guide
- 1Most physical systems can be represented approximately as a collection of binary bits by discretizing space and truncation.
- 2The number of possible classical configurations for an n-bit system is given by two to the power of n.
- 3Fundamental physical laws are deterministic and reversible, meaning past and future states can be uniquely reconstructed without information loss.
- 4A physical system's state at any instant can be represented as a column vector with a single non-zero entry.
Proofs, Examples & Demos
About the lecturer
Felix Bloch Professor of Theoretical Physics, Stanford University
Father of string theory, holographic principle pioneer, and creator of Stanford's Theoretical Minimum series across classical, quantum, and relativistic physics.
3 courses · 34 lectures in archiveView profile
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