Linked Questions

6
votes
2answers
733 views

Proof of conservation of information [duplicate]

After listening of some lectures of Leonard Susskind about black holes, he mentioned that conservation of information is one of the foundations of physics. After searching the web I cannot seem to ...
2
votes
2answers
191 views

Why is information indestructible in quantum mechanics? [duplicate]

Why is information indestructible in quantum mechanics?
2
votes
0answers
126 views

How can physics claim that information cannot be destroyed? [duplicate]

I watched a video featuring Leonard Susskind in which he took a small bowl of water and added three drops of food coloring. He swirled it around. At first you could tell where the drops must have ...
1
vote
0answers
61 views

Conservation of quantum information [duplicate]

Bosons occupy the same quantum states, even if fermions obey Pauli's Exclusion Principle. Heisenberg's Uncertainty Principle rules out determining the quantum states occupied by two close fermions, ...
17
votes
9answers
4k views

Entropy increase vs Conservation of information (QM)

Unitarity of quantum mechanics prohibits information destruction. On the other hand, the second law of thermodynamics claims entropy to be increasing. If entropy is to be thought of as a measure of ...
22
votes
4answers
11k views

How is information related to energy in physics?

I recently attended a talk by Dr. Ravi Gomatam on 'quantum reality', where the speaker suggested, that conservation of energy is not a fundamental law, and is conditional, but the conservation of ...
19
votes
6answers
5k views

Conservation of information and determinism?

I'm having a hard time wrapping my head around the conservation of information principle as formulated by Susskind and others. From the most upvoted answers to this post, it seems that the principle ...
10
votes
3answers
484 views

Information Preservation and Burning Books

I recently read an article in the NY Times called A Black Hole Mystery Wrapped in a Firewall Paradox. I really liked the article, but reading one quote immediately made me think of asking Physics.SE a ...
4
votes
1answer
412 views

Wasn't the Hawking Paradox solved by Einstein?

I just watched a BBC Horizon episode where they talked about the Hawking Paradox. They mentioned a controversy about information being lost but I couldn't get my head around this. Black hole ...
2
votes
3answers
207 views

Do algorithms have an intrinsic time direction?

This article says There is no intrinsic time direction in Newton's mechanics nor in the differential equations of the new physics. My question is, do other types of mathematics, say a cellular ...
0
votes
1answer
237 views

Information as a conserved quantity [duplicate]

A physics friend of mine asserted today that within the field of information theory, information can be thought of as a conserved quantity. this put me in mind of Noether's theorem and motivated the ...
0
votes
3answers
303 views

Why is it important that physics consists of unitary phenomena? [duplicate]

AFAIK all known quantum laws are unitary (except the collapse postulate, which is dubious anyway). Why is it important that the laws be unitary?
2
votes
0answers
79 views

Is information conserved in an expanding universe?

From the classical and quantum mechanical viewpoint, is information conserved in an expanding universe or not?
1
vote
0answers
46 views

Is the indestructibility of information a tautology?

What I was thinking was that, if we imagined a piece of information being destroyed, lost forever, wouldn't that require that there be no evidence that the information had ever existed since that ...