Questions tagged [randomness]
Randomness covers questions having to do with the concept of randomness in physical processes and questions about determinism vs indeterminism or interpretations thereof. Question related to concepts of probability may also use this tag.
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Quantum: Which improbable macroscopic events are possible?
Basically, the title. Web search had not found pages in top results with similar QA.
E.g. I understand nuclear blast can just end at any time because random chain-reaction has probability of not ...
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Asymptotic form of solution to biased random walk
(Cross post from math.stackexchange)
Consider a continuous time biased random walk on a 1D lattice. The random walker walks with rate $k_\mathrm{R}$ to the right and with rate $k_\mathrm{L}$ to the ...
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Anderson localization in the continuum case
I haven't looked into Anderson localization before. A quick review of the available information gives the impression that this phenomenon has mainly been studied for the case of a discrete random ...
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Is the collision in LHC quantum mechanically so we cannot predict the trajectory?
I'm puzzled as always. In the LHC 2 streams of particles are accelerated in opposite direction and allowed to smash against each other in a controlled accident, then is it classical or quantum ...
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Why aren't completely random quantum states 'physical'?
I've come across the statement that 'completely random states are generically not 'physical', in the sense that they cannot be eigenstates of Hamiltonians with local interactions (in 1D)'.
Reference: ...
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Various types of correlation functions in models with random interactions
In the Ising model, spin correlations are characterized by the following correlation function
$$
C_{ij} = \langle \sigma_i\sigma_j\rangle - \langle \sigma_i\rangle\langle \sigma_j\rangle
$$
where $\...
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What is really meant by randomness in quantum physics [closed]
I don't really know if my question even makes sense but, we know that for the double slit experiment, there is no way possible of telling which slit the electron will pass, prior to observing. Does ...
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Stochastic thermodynamical entropy production on growing state space
Suppose we have a stochastic process for a biased random walker starting at a position $x_0 = 0$. At a discrete time $n$, it can either move a distance $s^n$ to the right with probability $p$ or a ...
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How do I compute the bounds of random walk for a given ellapsed time?
I am trying to model random walk of a gyro, given some manufacturer specifications of maximum random walk in units of degrees per root-hour.
My first step was to generate white noise with a standard ...
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Which textbooks for random (Brownian) motion derivations? [duplicate]
I am a chemist currently trying to dive in to details of random motions. I have been studying Einstein-Smoluchowski treatment, and want to learn further (Fokker-Plank's equation and Langevin treatment ...
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Error analysis for counting experiments
i am trying to refresh my knowledge in error analysis and stumbled over an interesting question.
Suppose i have a radioactive compound and i want to measure the standard deviation of the decay count. ...
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Is randomness in quantum physics adequately formulated?
According to most experts' interpretations of quantum physics, some quantum event outcomes are random; they are not part of any cause-and-effect chain.
I'm struggling to find a thorough definition of ...
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Is Quantum randomness true randomness? [closed]
I would like you guys to read it, and see whether it makes sense, and correct me if anything is wrong.
I'm not an expert on these topics, so I understand if very wrong. It would be wonderful if you ...
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Is the universe deterministic, random, or both? [duplicate]
It occurred to me that the limits of possibility to the nature of the universe is it is either deterministic ie we are all at the will of natural laws that determine the outcome of events from the ...
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Is the random current model tight (in the sense of probability)?
Let us consider the random current model (of the classical Ising model) on $\mathbb{Z}^d$. More specifically, we have probability measures $\mathbb{P}_L$ on the product space $\mathbb{N}^{E_L}$ where $...
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