Does Potential in Quantum Mechanics Only Refer to Electrical Potentials?

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Discussion Overview

The discussion revolves around the concept of "potential" in quantum mechanics (QM), specifically whether it exclusively refers to electrical potentials or can also encompass other types, such as gravitational potentials. The scope includes theoretical considerations in quantum mechanics.

Discussion Character

  • Exploratory, Conceptual clarification, Debate/contested

Main Points Raised

  • One participant questions whether "potential" in QM always refers to electrical potentials or if it can include gravitational potentials.
  • Another participant suggests that any potential affecting energy is relevant, implying a broader interpretation.
  • A different viewpoint indicates that the relevance of gravitational versus electrical potentials depends on the specific problem being addressed, noting that gravity is often negligible for electrons compared to electric fields.
  • Some participants reference external sources discussing gravitational potentials in quantum contexts, indicating that there are examples where gravitational effects are considered.

Areas of Agreement / Disagreement

Participants express differing views on the applicability of various types of potentials in quantum mechanics, indicating that multiple competing perspectives remain without a clear consensus.

Contextual Notes

The discussion highlights the conditionality of potential relevance based on the specific physical context and the forces involved, such as the dominance of electric fields over gravitational effects in certain scenarios.

Physics_UG
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so I received a physics degree and finished a quantum mechanics course. I plan on entering grad school in physics. However, I have a dumb question. When referring to a "potential" in QM (such as if you solve the wavefunction for an electron in a periodic potential) does it always refer to an electrical potential? Can it refer to, for instance, gravitational potentials too?

Thanks.
 
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I would say yes. Any potential that effects the energy...
 
I think it depends on the problem: for electrons gravity is very small compared to electric field so the potential is primarily from the electric field and we discount gravity. For particles concerned with the nuclear forces then the potential would be from the strong nuclear force and we'd discount the electric field...
 
great! thanks guys!
 

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