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  2. Simulation hypothesis - Wikipedia

    en.wikipedia.org/wiki/Simulation_hypothesis

    Among proposed signatures is an anisotropy in the distribution of ultra-high-energy cosmic rays that, if observed, would be consistent with the simulation hypothesis according to these physicists. [41] In 2017, Campbell et al. proposed several experiments aimed at testing the simulation hypothesis in their paper "On Testing the Simulation ...

  3. Particle in a one-dimensional lattice - Wikipedia

    en.wikipedia.org/wiki/Particle_in_a_one...

    Assuming the spacing between two ions is a, the potential in the lattice will look something like this: The mathematical representation of the potential is a periodic function with a period a. According to Bloch's theorem, [1] the wavefunction solution of the Schrödinger equation when the potential is periodic, can be written as:

  4. Embedded atom model - Wikipedia

    en.wikipedia.org/wiki/Embedded_atom_model

    In a simulation, the potential energy of an atom, , is given by [3] = (()) + (), where is the distance between atoms and , is a pair-wise potential function, is the contribution to the electron charge density from atom of type at the location of atom , and is an embedding function that represents the energy required to place atom of type into the electron cloud.

  5. Energy minimization - Wikipedia

    en.wikipedia.org/wiki/Energy_minimization

    In the field of computational chemistry, energy minimization (also called energy optimization, geometry minimization, or geometry optimization) is the process of finding an arrangement in space of a collection of atoms where, according to some computational model of chemical bonding, the net inter-atomic force on each atom is acceptably close to zero and the position on the potential energy ...

  6. Potential of mean force - Wikipedia

    en.wikipedia.org/wiki/Potential_of_mean_force

    When examining a system computationally one may be interested in knowing how the free energy changes as a function of some inter- or intramolecular coordinate (such as the distance between two atoms or a torsional angle). The free energy surface along the chosen coordinate is referred to as the potential of mean force (PMF). If the system of ...

  7. Interatomic potential - Wikipedia

    en.wikipedia.org/wiki/Interatomic_potential

    Another class of machine-learned interatomic potential is the Gaussian approximation potential (GAP), [87] [88] [89] which combines compact descriptors of local atomic environments [90] with Gaussian process regression [91] to machine learn the potential energy surface of a given system.

  8. Watchdog raises concerns over Trump-era leak probes of ... - AOL

    www.aol.com/watchdog-raises-concerns-over-trump...

    A top government watchdog raised concerns Tuesday over the handling of leak investigations during the first Trump administration that targeted members of Congress and the media despite finding no ...

  9. Particle in a box - Wikipedia

    en.wikipedia.org/wiki/Particle_in_a_box

    However, since the particle is not entirely free but under the influence of a potential, the energy of the particle is = +, where T is the kinetic and V the potential energy. Therefore, the energy of the particle given above is not the same thing as E = p 2 / 2 m {\displaystyle E=p^{2}/2m} (i.e. the momentum of the particle is not given by p ...

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