Who influenced her thinking about quantum foundations?

Her education was shaped by Luis de Laa, who exposed her to the statistical interpretation, many-worlds, Bohrian interpretations, and other views. This foundational exposure helped her appreciate the ontological questions behind quantum mechanics. The discussion notes how these interpretations motivated ongoing inquiry beyond practical calculations.

What is the new approach she is developing regarding spatial superpositions?

She aims to describe spatial superpositions in a physical way and develop a new ontology for the wave function. This leads to a mathematical formulation and a model that explains how the classical world emerges from the quantum one, potentially linking quantum states with gravity.

What problem did Penrose propose solving with time in the quantum realm?

Penrose suggested that to have a consistent picture when the wave function collapses and general relativity is involved, time may need to behave differently, potentially even backwards. This challenges the assumption that time always moves forward in quantum events and motivates alternative time-related dynamics in the quantum realm.

How does Ivette view time in the quantum versus classical realms?

She states that in the quantum reality time might behave differently than in the classical world, where the arrow of time is forward. This distinction is central to understanding how quantum states interact with measurements and classical observations.

How do they plan to distinguish between interpretations experimentally?

She argues that it is possible to design experiments that can differentiate between foundational interpretations, providing concrete predictions. This emphasis on measurable distinctions is contrasted with the historical proliferation of interpretations without decisive tests.

What is the overall goal of their experimental approach?

The goal is to compare models with nature through measurement and experiment, creating a feedback loop where theory and experiment refine each other. This approach seeks to avoid purely mathematical speculation by anchoring ideas in observable predictions.

Ivette Fuentes - Experiments in Quantum Mechanics

Closer To Truth

Education3 min read11 min video

Mar 5, 2026|1,828 views|95|56

closer to truth robert lawrence kuhn Ivette Fuentes Quantum Mechanics Quantum physics physics science cosmos laws of nature quantum theory general relativity how does the world really work

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Key Moments

TL;DR

Examines quantum ontology, quantum vs classical reality, and testable predictions.

Key Insights

Foundations are essential to connect quantum theory with gravity, not just practical applications.

Understanding the ontology of the wave function is central to progress in quantum foundations.

There is a meaningful distinction between quantum reality and classical reality, including how time may operate differently.

A new, rigorous ontology is proposed, leading to concrete mathematical models and testable predictions.

Experimental tests are prioritized to discriminate between interpretations, not just theorize.

Time-reversal or nonstandard temporal dynamics from the quantum realm are considered as possible features inspired by Penrose.

INTRODUCTION: FOUNDATION OF QUANTUM MECHANICS

Ivette begins by stressing why foundations matter: after a century of debate, physicists still question what the wave function really represents, balancing practical results with ontological questions. She recalls her teacher Luis de Laa, who exposed students to multiple interpretations and the tension between information and physical reality. The tease of a new idea signals that progress requires more than calculations; it requires engaging with the meaning of quantum mechanics itself, especially as we push toward unifying it with gravity.

ONTOLOGY OF THE WAVE FUNCTION

Her upcoming work aims to answer what the wave function physically represents and how to describe spatial superpositions with a coherent ontology. She notes that after many decades, the question remains unresolved, challenging the 'shut up and calculate' mindset. The project seeks to treat the quantum state as something real that interacts with classical outcomes, shaping our understanding of measurements, preparation, and potential gravity coupling. The goal is to derive a robust, testable description rather than rely on informal interpretations.

QUANTUM REALITY VS CLASSICAL REALITY

Ivette emphasizes a clear distinction between quantum reality and the classical world, acknowledging their interaction yet maintaining they are not identical. Quantum processes obey different rules than everyday experience, while the classical world emerges through measurement and decoherence. Each realm can influence the other: labs create superpositions with lasers and atoms, yet measurements yield definite classical records. Recognizing their difference helps explain why a theory must account for both quantum features and the forward-moving arrow of time observed classically.

TIME AND TEMPORAL DYNAMICS IN FOUNDATIONS

She aligns with Roger Penrose in suggesting time may behave differently in the quantum domain, particularly around wave-function collapse. The forward flow of time characterizes the classical world, but the quantum reality could permit backward or nonstandard temporal ordering. Initially skeptical, she comes to see that accommodating alternative temporal structures may resolve tensions when combining quantum states with gravity. This opens the door to novel dynamics that defy strict classical intuition and expand how we model quantum events.

A NEW ONTOLOGY WITH MATHEMATICAL RIGOR

From the proposed ontology, she sketches a formal framework—an equation and model that translate philosophical stance into precise mathematics. The emphasis is on deriving predictions from a robust theory rather than relying on vague interpretations. The aim is falsifiability and empirical relevance: the mathematical structure should yield concrete outcomes that can be tested against nature, enabling meaningful comparisons with competing interpretations through real experiments.

FROM THEORY TO EXPERIMENT: TESTABLE PREDICTIONS

A central claim is that the theory makes clear, testable predictions to differentiate foundational views. Ivette outlines designing experiments with collaborators to probe the proposed effects, ensuring theory and experiment reinforce each other. This loop—theory motivates experiment, data confirm or challenge the model, refinements follow—contrasts with approaches that debate interpretations without empirical discrimination. The emphasis is on placing foundational ideas on the same experimental ground as other quantum tests.

EXPERIMENTAL PATHS AND FUTURE CHALLENGES

She mentions concrete collaboration to build the experimental test with Philip and Chris Westbrook, signaling movement from theory toward laboratory realization. This demonstrates that foundational questions can be answered through physical practice, not merely philosophical argument. The broader message is that progress depends on translating speculative concepts into measurable phenomena, guiding future work toward decisive empirical outcomes and refining models based on the results.

CONCLUSION: RESEARCH ETHOS AND IMPACT

In closing, Ivette stresses the value of theory-experiment dialogue and the humility to accept being wrong if the data require it. The goal is a disciplined loop of prediction, testing, and refinement to narrow viable interpretations. The talk celebrates pursuing seemingly improbable ideas as long as they remain mathematically precise and experimentally grounded, ending with gratitude and a call to continue collaborative, empirical exploration of quantum foundations.

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Common Questions

She argues that there is a quantum reality and a classical reality that are different, and understanding the ontology of the wave function is necessary to connect quantum theory with gravity. She emphasizes moving beyond 'shut up and calculate' to a deeper ontological grounding. This perspective guides her pursuit of a mathematically rigorous, testable model.