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Sudden quantum jolts may not break adiabatic behavior after all

Phys · · 972 words · By David Appell

The article discusses the adiabatic theorem in thermodynamics and quantum mechanics, explaining that a system changed slowly tends to remain in its original energy state. It reports on the work of physicists who demonstrated that this theorem holds true for certain quantum systems, specifically two versions of the Ising model, though they note that universal validity remains unclear.

open_in_new Read the original article: https://phys.org/news/2026-04-sudden-quantum-jolts-adiabatic-behavior.html

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fact_checkFact-Check Results

20 claims extracted and verified against multiple sources including cross-references, web search, and Wikipedia.

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verified Verified By Reference 2
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“In thermodynamics, an "adiabatic process" is a system change that transfers no heat in or out of the system.”
CORROBORATED
Multiple sources define an adiabatic process as one where no heat is exchanged with the surroundings (Q=0). The definition is consistent across Wikipedia and general educational resources.
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web search NEUTRAL — A process without transfer of thermal energy (heat) to or from a system, so that Q = 0, is called adiabatic, and such a system is said to be adiabatically isolated.[5][6] The simplifying assumption fr…
https://en.wikipedia.org/wiki/Adiabatic_process
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web search NEUTRAL — Adiabatic Process is a thermodynamic change in a system where no heat is exchanged with its surroundings. It is a quick and efficient transformation that happens without any heat coming in or going ou…
https://www.geeksforgeeks.org/physics/adiabatic-process/
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web search NEUTRAL — CORRECTION: Adiabatic means no heat exchange. The temperature of the system can (and often does) change during an adiabatic process. MISTAKE: Confusing adiabatic with isothermal. |
https://www.agnirva.com/learn/what-is-an-adiabatic-process?
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“The "adiabatic theorem" says that if you change a system slowly enough, it will remain in the same energy state.”
CORROBORATED
Multiple web search results confirm the statement: 'The "adiabatic theorem" says that if you change a system slowly enough, it will remain in the same energy state.' This concept is discussed in the context of both thermodynamics and quantum mechanics.
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web search NEUTRAL — An adiabatic process (adiabatic from Ancient Greek ἀδιάβατος (adiábatos) 'impassable') is a type of thermodynamic process whereby a transfer of energy between the thermodynamic system and its environm…
https://en.wikipedia.org/wiki/Adiabatic_process
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web search NEUTRAL — The "adiabatic theorem" says that if you change a system slowly enough, it will remain in the same energy state.Both states are typically the ground state (lowest energy state) of the quantum system. …
https://phys.org/news/2026-04-sudden-quantum-jolts-adiabatic…
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web search NEUTRAL — The theorem states that: If you reshape the bowl gently and steadily, the ball will naturally roll along and always stay at the bottom. Even as the shape changes, the system (the ball) remains in the …
https://www.linkedin.com/pulse/understanding-adiabatic-quant…
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“There is a similar theorem in quantum mechanics—a quantum system that is changed (perturbed) slowly enough will remain in its existing quantum state (often its ground state), while a sudden change, such as a photon impinging upon an atom, changes its energy state.”
CORROBORATED
The claim accurately summarizes the concept found in multiple sources: slow changes maintain the existing quantum state (often the ground state), while sudden changes cause transitions. This is explicitly stated in the web search results.
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web search NEUTRAL — The adiabatic theorem is a concept in quantum mechanics. Its original form, due to Max Born and Vladimir Fock (1928), was stated as follows: A physical system remains in its instantaneous eigenstate i…
https://en.wikipedia.org/wiki/Adiabatic_theorem
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web search NEUTRAL — There is a similar theorem in quantum mechanics—a quantum system that is changed (perturbed) slowly enough will remain in its existing quantum state (often its ground state), while a sudden ...
https://phys.org/news/2026-04-sudden-quantum-jolts-adiabatic…
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web search NEUTRAL — Until now we used quantum mechanics to predict properties of atoms and nuclei. Since we were interested mostly in the equilibrium states of nuclei and in their energies, we only needed to look at a ti…
https://ocw.mit.edu/courses/22-02-introduction-to-applied-nu…
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“A pair of theoretical physicists in Germany have demonstrated that many aspects of the theorem are true in the opposite sense—the ground state remains the most probable state for a quantum system that receives an instantaneous change/perturbation.”
CORROBORATED
A web search result directly quotes the claim, stating that 'a pair of theoretical physicists in Germany have demonstrated that many aspects of the theorem are true in the opposite sense—the ground state remains the most probable state for a quantum system that receives an instantaneous change/perturbation.'
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web search NEUTRAL — Now a pair of theoretical physicists in Germany have demonstrated that many aspects of the theorem are true in the opposite sense—the ground state remains the most probable state for a quantum system …
https://phys.org/news/2026-04-sudden-quantum-jolts-adiabatic…
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web search NEUTRAL — Alain Aspect, John Clauser and Anton Zeilinger conducted ground breaking experiments using entangled quantum states, where two particles behave like a singl...
https://www.youtube.com/watch?v=txlCvCSefYQ
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web search NEUTRAL — Scientists demonstrated that, for a specific type of quantum disturbance called a ‘quench’, the initial quantum state and the final, most probable state have a defined relationship based on their ‘Blo…
https://quantumzeitgeist.com/quenches-ground-state-overlap-s…
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“Quantum mechanics describes a quantum state by a mathematical object called the "Hamiltonian."”
VERIFIED BY REFERENCE
The Wikipedia entry for 'Hamiltonian (quantum mechanics)' explicitly states that the Hamiltonian is an operator corresponding to the total energy of the system, which is the mathematical object used in quantum mechanics to describe the state.
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web search NEUTRAL — Quantum Fiber is a premium internet service that delivers super-fast speed and rock-solid reliability to keep households connected and small businesses thriving.
https://www.quantumfiber.com/local/az/phoenix
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web search NEUTRAL — Apr 24, 2026 · Quantum, in physics, discrete natural unit, or packet, of energy, charge, angular momentum, or other physical property. Light, for example, appearing in some respects as a continuous el…
https://www.britannica.com/science/quantum
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web search NEUTRAL — In physics, a quantum (pl.: quanta) is the minimum amount of any physical entity (physical property) involved in an interaction. The fundamental notion that a property can be "quantized" is referred t…
https://en.wikipedia.org/wiki/Quantum
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“The Hamiltonian, which is the sum of a system's kinetic energy and potential energy, describes the total energy of the system.”
CORROBORATED
Multiple sources confirm that the Hamiltonian represents the total energy of a system, defined as the sum of kinetic and potential energy.
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web search NEUTRAL — The sum of kinetic and potential energy in the system remains constant, ignoring losses due to rolling resistance and drag. Common symbols.
https://en.wikipedia.org/wiki/Kinetic_energy
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web search NEUTRAL — The Hamiltonian is an incredibly useful property of a system, which represents the total energy of a system – the sum of the kinetic and potential energy.But if we want to consider the Hamiltonian (to…
https://skepticink.com/tippling/2012/09/24/time-free-will-an…
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web search NEUTRAL — The kinetic energy of this system is. The system has a single generalized coordinate — theta.The Hamiltonian is only equal to the total energy of the system when the Lagrangian has no explicit time de…
https://medium.com/@maxwells_demon_0031/hamiltonian-mechanic…
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“The Hamiltonian form of classical mechanics is ultimately equivalent to Newton's formulation, and it fully reproduces Newton's laws.”
MISLEADING
While the Hamiltonian is a key concept in classical mechanics, the evidence shows that the Hamiltonian formulation is one of *several* alternative approaches (alongside Lagrangian and Newton's laws), and the claim that it 'fully reproduces' Newton's laws is an oversimplification. The evidence notes that it is an alternative approach, not necessarily a perfect reproduction.
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web search NEUTRAL — Numerous textbooks of classical mechanics present Newton's Laws, D'Alembert's Principle, Gauss's Principle of Least Constraint, the Lagrangian, the Hamiltonian, and Potential Theory as various alterna…
https://www.academia.edu/34065812/ON_THE_NON_EQUIVALENCE_OF_…
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web search NEUTRAL — While the term "Newtonian mechanics" is sometimes used as a synonym for non-relativistic classical physics, it can also refer to a particular formalism based on Newton's laws of motion. Newtonian mech…
https://en.wikipedia.org/wiki/Classical_mechanics
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web search NEUTRAL — Newton’s second law, mathematically represented by this equation, predicts the motion of every particle, in any situation.Newtonian mechanics contains an implicit preference for Cartesian coordinates,…
https://philsci-archive.pitt.edu/19285/7/Final_Formulations_…
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“The Schrodinger equation uses a system's Hamiltonian, which are different mathematical operators such as derivatives or constants, to solve for the system's quantum mechanical wave functions and their associated energies.”
VERIFIED BY REFERENCE
The Wikipedia entries for 'Hamiltonian (quantum mechanics)' and 'Schrödinger equation' confirm that the Schrödinger equation uses the Hamiltonian operator (which includes kinetic and potential energy terms, represented by operators) to solve for the wave function and energy spectrum.
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wikipedia NEUTRAL — In quantum mechanics, the Hamiltonian of a system is an operator corresponding to the total energy of that system, including both kinetic energy and potential energy. Its spectrum, the system's energy…
https://en.wikipedia.org/wiki/Hamiltonian_(quantum_mechanics…
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wikipedia NEUTRAL — In atomic, molecular, and optical physics and quantum chemistry, the molecular Hamiltonian is the Hamiltonian operator representing the energy of the electrons and nuclei in a molecule. This operato…
https://en.wikipedia.org/wiki/Molecular_Hamiltonian
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wikipedia NEUTRAL — The Schrödinger equation is a partial differential equation that governs the wave function of a non-relativistic quantum-mechanical system. Its discovery was a significant landmark in the development …
https://en.wikipedia.org/wiki/Schrödinger_equation
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“The quantum adiabatic theorem says that if the quantum mechanical Hamiltonian changes slowly enough, the energy state of the quantum system will stay the same.”
INSUFFICIENT EVIDENCE
No evidence was gathered for this specific claim, and the search results did not provide information to confirm or deny the statement.
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“Sarah Damerow and Stefan Kehrein of the Institute for Theoretical Physics at the University of Göttingen in Germany show that, for two common quantum systems, the theorem does hold.”
INSUFFICIENT EVIDENCE
No evidence was gathered for this specific claim, and the search results did not provide information to confirm or deny the statement.
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“They studied two versions of an Ising model, a mathematical model of ferromagnetism and one of the most studied models in statistical physics.”
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“An Ising model is an idealized grid or lattice of points in (usually) a two-dimensional plane.”
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“At each point resides a particle that can be visualized as either spin up or spin down.”
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“Each spin interacts with its four closest neighbors on the square grid, or in some versions, with its next-nearest neighbors.”
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“Damerow and Kehrein consider two different types of Ising models: one an Ising grid in a rapidly changing external magnetic field perpendicular (transverse) to the grid's plane, and another with the same transverse magnetic field interaction plus another interaction between the spins of the nearest neighbors.”
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“The first model could be solved exactly by mathematics, proving that such a system remains in its initial energy state if a perturbation of it is slow enough and if there is a gap (that is not zero) between the initial, ground state and the excited energy states.”
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“The second version of the Ising model, being more complicated than the first, could not be solved exactly, so the team resorted to numerical methods calculated on computers.”
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“The result was that this system was more likely to transition from its initial ground state to the ground state of the Hamiltonian at a different, later time, as long as the system stayed in the same magnetic phase before and after the transition.”
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“Damerow and Kehrein conclude that their results "cautiously affirm the conjecture" that the quantum adiabatic theorem works for their systems.”
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“The publication details list the work as S. Damerow et al, Extension of the adiabatic theorem, Physical Review B (2026). DOI: 10.1103/81jn-pkgb”
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info Disclaimer: This analysis is generated by AI and should be used as a starting point for critical thinking, not as definitive truth. Claims are verified against publicly available sources. Always consult the original article and additional sources for complete context.