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The physicist who puts Penrose’s quantum ideas to the test

Seeing | Quantum Physics | 2025-12-26

Atom molecule. Mixed media

Professor of physics Ivette Fuentes is doing groundbreaking work at the interface of quantum mechanics and gravity. At the heart of Fuentes’ work are Bose–Einstein condensates (BECs)—ultra-cold states of matter in which millions of atoms behave as a single quantum system. These systems are exquisitely sensitive to gravitational effects, making them ideal candidates for probing whether gravity plays an active role in quantum collapse, as Roger Penrose has long suggested. In this conversation with Hans Busstra, Fuentes reflects on her original, cross-disciplinary approach to physics by drawing on her background as a dancer: first, one must fully master the classical forms—the established fields of physics—but true novelty only emerges when one dares to break the rules.

0:00 Introduction
4:06 Fuentes about her background as a dancer & Physics as a dance
10:08 The tension between general relativity and quantum mechanics
12:26 Strategies for unifying gravity and quantum theory
17:26 Ivette Fuentes’ work in quantum optics
21:08 Quantum field theory in curved spacetime
28:15 Roger Penrose’s dissatisfaction with quantum theory
34:52 If gravity collapses the wavefunction
37:39 Fuentes’ view compared to Penrose
44:21 Bose–Einstein condensates explained
49:51 Do phonons have gravitational effects?
55:02 The metaphysical implications of Fuentes’ work
1:01:12 Does metaphysics play a role in physics?
1:02:45 Working with Roger Penrose
1:06:30 Quantum mechanics and consciousness
1:10:40 Not surrendering to purely epistemic approaches
1:14:02 Parsimony in doing physics
1:17:37 Letting go of deeply held assumptions
1:24:29 The current paradigm in physics
1:26:13 What would physics look like from an idealist perspective?
1:27:17 Fuentes’ upcoming paper
1:29:00 Wearing different hats as a physicist
1:30:27 How Fuentes thinks about reality at home
1:31:59 Physics, classical ballet, and modern dance

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Essentia Foundation communicates, in an accessible but rigorous manner, the latest results in science and philosophy that point to the mental nature of reality. We are committed to strict, academic-level curation of the material we publish.

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