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shimpsblog [en]

English blog at blog.shimps.org

Mathematical Universe

fmg Friday June 20, 2025

Max Tegmark advocates the iniverse being a purely mathematical structure. There are predecessors of this idea in history, e.g. the ancient Greeks or Eugene Wigner and his famous and often quoted article The Unreasonable Effectiveness of Mathematics in the Natural Sciences.

Our Mathematical Universe

Max Tegmark
Sep 16, 2013

WP: Max Tegmark
WP: Eugene Wigner
WP: The Unreasonable Effectiveness of Mathematics in the Natural Sciences

The Strange Quantum World

fmg Saturday June 14, 2025

Quantum mechanics uses two important concepts we usually are not aware of in daily life: the principle of least action (as classical mechanics does) and wave functions with amplitudes, which leads to a probability density according to Born's rule. There is a third concept evolving from those: Feynman's path integral method mimics Fermat's principle.

Something Strange Happens When You Trust Quantum Mechanics

Veritasium
Mar 5, 2025

WP: Fermat's principle
WP: Action principles
WP: Path integral formulation
WP: Wave function
WP: Probability amplitude
WP: Born rule

Neil Turok: Astonishing Theory Proposal

fmg Sunday June 8, 2025

Neil Turok has got new views and insights about black holes and the beginning and structure of the universe which differ from the established scientific opinion of the majority.

The Most Astonishing Theory of Black Holes Ever Proposed

Curt Jaimungal
Apr 22, 2025

WP: Neil Turok
Neil Turok
Neil Turok on the case for a parallel universe going backwards in time (25 January 2023)
A mirror universe might tell a simpler story: Neil Turok (November 8, 2023)

Tim Maudlin: Bell's Theorem

fmg Saturday May 31, 2025

For the weekend an almost three hours interview: Tim Maudlin about mathematics and physics, the ancient Greeks and the importance of Bell's theorem for quantum mechanics and our understanding of reality.

Why Bell's Theorem Changes Everything | Tim Maudlin

Curt Jaimungal
Oct 10, 2022

Falsifying General Gravity?

fmg Thursday May 29, 2025

There is a proposal for an experiment to decide whether general relativity is not correct at the quantum level. This opens a window to understand which way towards a theory of quantum gravity might be chosen.

The Groundbreaking Quantum Gravity Experiment

Curt Jaimungal
Nov 4, 2024

Prof Vlatko Vedral
Vlatko Vedral, Professor of Quantum Information Theory
WP: Vlatko Vedral
Chiara Marletto - Wolfson College
Chiara Marletto
Constructor Theory
WP: Chiara Marletto
Gravitationally-induced entanglement between two massive particles is sufficient evidence of quantum effects in gravity

Hidden Realities of the Universe

fmg Friday May 23, 2025

This is a talk about the universe and hidden realities. Lawrence Krauss explains how science made progress in understanding our world, our reality und the universe.

Lawrence Krauss: Hidden Realities - The Greatest Story Ever Told... So Far (at Conway Hall)

Conway Hall
Dec 16, 2016

Unsolved Problem: Fine-structure Constant

fmg Sunday May 11, 2025

The strength of the electromagnetic interaction is desribed by the fine-structure constant aka Sommerfeld constant. It appears at different places in modern physics in an almost magical way, and it still remains mysterious.

Quote Wolfgang Pauli: When I die my first question to the Devil will be: What is the meaning of the fine structure constant?

Why Is 1/137 One of the Greatest Unsolved Problems In Physics?

PBS Space Time
Sep 28, 2022

WP: Fine-structure constant
WP: Arnold Sommerfeld
WP: Wolfgang Pauli

Neighborhood Black Holes

fmg Friday May 9, 2025

Where are the closest black holes in our cosmic neighborhood? How far away are they? Are they dangerous to us? Are they interesting for astronomers?

The closest KNOWN black holes to Earth (only three have ever held the title)

Dr. Becky
Aug 15, 2024

Physics Mystery: The Horizon Problem

fmg Wednesday May 7, 2025

The lifetime of the universe has not been long enough to transport information from every place to every other place. Despite this fact regions in different directions without contact have similar properties. How does this work? Superluminal transport of information is excluded by relativity. The observations of the cosmic microwave background are astonishing.

The Horizon Problem | The Universe's biggest UNSOLVED mystery

Dr. Becky
Feb 15, 2024

Search for Dark Matter

fmg Saturday May 3, 2025

Shielded laboratories below the surface of the earth are the place for experiments which try to find evidence for the existence of dark matter. It is difficult to filter out disturbing sources of radiation which might influence the results.

The Absurd Search For Dark Matter

Veritasium
Jun 2, 2022