The physicist who puts Penrose’s quantum ideas to the test
Seeing | Quantum Physics | 2025-12-26
Prof. Ivette Fuentes Guridi, PhD
Hans Busstra, MA
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
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.
Recently published
|
Stephen Lester invites us to contemplate the relationship between the seemingly individual self and the world—including other seemingly individual selves—merely as different perspectives within a continuous ecosystem. Ecology has taught us to see the world as an interconnected whole. In much the same way, embodied awareness can teach us that we aren’t separate from the world, but instead that the objects we observe are merely other perspectives within the same consciousness we are.
|
Dr. Koch argues that, because AI computers have a feed-forward structure very reminiscent of the human cerebellum—which is empirically known not to be involved in human consciousness—we have no reason to expect AI computers to have a conscious inner life of their own. He further substantiates his argument with the clear, quantified prediction of Integrated Information Theory (IIT) that systems with low integrated information, such as silicon computers implementing Large Language Models, do not feel like anything from the inside.
From the archives
|
Prof. Larry Nazareth recounts the fundamental difference in perspective that underlies the Cartesian and Bergsonian views of life and world. The former’s dictum states: ‘I compute, algorithmically, therefore I think, symbolically, therefore I am, experientially.’ The latter, however, reverses this dictum: ‘I am, experientially, therefore I think, symbolically, therefore I compute, algorithmically.’ Depending on which of these views we choose to base our understanding of nature and life, we may or may not have a future, Nazareth argues.
|
How is it possible that the cerebellum, which contains roughly 80% of all the neurons in the human brain, can be severely damaged, or even absent, without abolishing consciousness? In this conversation, Jeremiah Hendren, a member of the Integrated Information Theory (IIT) Lab and long-term collaborator of IIT founder Giulio Tononi, joins Hans Busstra to unpack Integrated Information Theory (IIT), a theory that answers this fascinating neuroscience mystery.
|
Dr. Currie argues that framing the effectiveness of shamanic medicine in terms of placebo effects alone does not do justice to the sophistication of shamanic practice. The latter, she maintains, is based on a complex, multi-tiered metaphysics whereby cause and effect relations beyond the visible material world are deliberately exploited by the shaman.
Reading
Essays
|
The search for authenticity fails because we conduct it in the wrong place: thought itself. The epistemic gap—the inability of concepts to capture experiential reality—produces the persistent sense that something fundamental about existence is amiss, a tension that underlies much existential questioning. When representations are mistaken for reality, three pervasive forms of suffering follow: fear of death, violence, and pride. Each dissolves when the error is recognized. But recognition alone fades; only sustained disengagement from conceptual identification makes the insight a lived experience, argues Steven Pashko.
|
Anil Seth is a world-leading neuroscientist who has made important contributions to our understanding of reality as a controlled hallucination. According to the concept of active inference, our perception of reality is not a direct reflection of the world but, instead, the most accurate guess that our brain can muster, which it continually checks and updates with incoming sensory information. But strange things happen when neuroscientists play around with sensory input in unexpected ways. Anil Seth and his team at Sussex University created the Dream Machine, a stroboscopic device that syncs flickering light to music to induce vivid, often complex, hallucinatory visuals in the viewer. In group sessions, exactly the same white light and music gives rise to a tremendous diversity in perception.
|
Prof. Larry Nazareth recounts the fundamental difference in perspective that underlies the Cartesian and Bergsonian views of life and world. The former’s dictum states: ‘I compute, algorithmically, therefore I think, symbolically, therefore I am, experientially.’ The latter, however, reverses this dictum: ‘I am, experientially, therefore I think, symbolically, therefore I compute, algorithmically.’ Depending on which of these views we choose to base our understanding of nature and life, we may or may not have a future, Nazareth argues.
|
How is it possible that the cerebellum, which contains roughly 80% of all the neurons in the human brain, can be severely damaged, or even absent, without abolishing consciousness? In this conversation, Jeremiah Hendren, a member of the Integrated Information Theory (IIT) Lab and long-term collaborator of IIT founder Giulio Tononi, joins Hans Busstra to unpack Integrated Information Theory (IIT), a theory that answers this fascinating neuroscience mystery.
|
Dr. Currie argues that framing the effectiveness of shamanic medicine in terms of placebo effects alone does not do justice to the sophistication of shamanic practice. The latter, she maintains, is based on a complex, multi-tiered metaphysics whereby cause and effect relations beyond the visible material world are deliberately exploited by the shaman.
Seeing
Videos
|
In this rigorous and absolutely clear essay, which might as well have been published in an academic journal, Haswell shows that Eliminativism—the notion that the qualities of experience don’t really exist—contradicts not only the most obvious pre-theoretical facts of nature, it also contradicts itself in a manner that cannot be remedied.
|
In this conversation with Hans Busstra, the legendary CPU inventor explains his quantum theory of consciousness in more detail and outlines some of his novel ideas, to be presented in his upcoming new book. He discusses, for instance, how we should regard our material universe: “spacetime and matter are the permanent memory of the experience of the self knowing of One.”
|
In this remarkably observant essay, Brian Fang shows that the mathematics of the ubiquitous Fourier transform—which ties the words of events and frequencies together—provides a formal grammar for understanding how temporality is a facet of eternity, and vice-versa. As such, perhaps what we call “the world” is not fundamentally made of matter unfolding in time, but of patterns that admit atemporal readings. This does not prove idealism, but makes it less strange. If being can be fully captured in structural terms, then perhaps the ultimate constituents of reality are not particles in motion, but intelligible patterns that merely appear temporal when viewed from within.
Let us build the future of our culture together
Essentia Foundation is a registered non-profit committed to making its content as accessible as possible. Therefore, we depend on non-financial contributions from people like you to continue to do our work.
