5 papers
The Physics Behind Symmetrization
R. E. Kastner
It is often asserted that quantum states for same-type particles must be symmetrized due to ``label redundancy,'' i.e. the assumption that the permutations of labels in direct-prod…
Cosmology from Transactional Entropic Gravity: A Concise Review
R. E. Kastner, Andreas Schlatter
This is a review of key aspects of a model presented at the Lake Como School: Dark Matter, Dark Energy, and the Cosmological Tensions, June, 2025. The associated publication can be…
Where Photons Have Been: Nowhere Without All Components of Their Wavefunctions
R. E. Kastner
A nested interferometer experiment by Danan et al (2013) is discussed and some claims evaluated concerning the whereabouts of the photon, primarily in the context of time-symmetric…
Maxwell's Demon Is Foiled by the Entropy Cost of Measurement, Not Erasure
R. E. Kastner
I dispute the conventional claim that the second law of thermodynamics is saved from a "Maxwell's Demon" by the entropy cost of information erasure, and show that instead it is mea…
A Model of Entropy Production
Andreas Schlatter, R. E. Kastner
A key tenet of the Transactional Interpretation of Quantum Mechanics is the idea that photon absorption localizes the absorbing material system. In doing so, it measures the locati…