ABOUT THE FQXi PODCAST

The FQXi podcast brings you the latest ideas in foundational physics and cosmology—and includes interviews with our members and other leading scientists. It's hosted by Zeeya Merali and Brendan Foster. You can contact us at podcast@fqxi.org, and follow us on twitter: @FQXi. The podcast is produced by Zeeya, and music is provided by Baltimore-based Diefenbaker.

The FQXi podcast brings you the latest ideas in foundational physics and cosmology—and includes interviews with our members and other leading scientists. It's hosted by Zeeya Merali and Brendan Foster. You can contact us at podcast@fqxi.org, and follow us on twitter: @FQXi. The podcast is produced by Zeeya, and music is provided by Baltimore-based Diefenbaker.

RECENT FORUM POSTS

**ST**: "Re effects of gravitational fields on quantum coherence and superposition,..."
*in* New Podcast: Hawking...

**Pentcho Valev**: "Twin Paradox: Einstein's 1918 Paper Before the advent of Einstein's..."
*in* New Podcast: Hawking...

**Steve Dufourny**: "I have read your attachements, Do you think that the system of fusion in..."
*in* Is Gravity Time's Archer?

**Steve Dufourny**: "Indeed dear Mr Sorli, I don't understand why somany scientists insist on..."
*in* Is Gravity Time's Archer?

**Steve Dufourny**: "I am insisting about the velocities of black particles. It is important to..."
*in* New Podcast: Pluto,...

**Steve Dufourny**: "Hi all, In a rationzl road,the black mass is in the same logic that all..."
*in* New Podcast: Pluto,...

**Richard Gill**: "John, that was the whole point of my work in..."
*in* “Spookiness”...

**John Cox**: "Richard, I should butt out and let the arguments about probabilistics run..."
*in* “Spookiness”...

RECENT ARTICLES

*click titles to read articles*

**Video Article: Solar-System-Sized Experiment to Put Time to the Test**

Is quantum theory or relativity right about the nature of time? Bouncing radar beams off the moons of Jupiter just might help sort things out.

**Conjuring a Neutron Star from a Nanowire**

Using tiny mechanical devices to create accelerations equivalent to 100 million times the Earth’s gravitational field—mimicking the arena of quantum gravity in the lab.

**Inferring the Limits on Reality (that Even the Gods Must Obey)**

The fuzziness of the quantum realm could arise from mathematical restrictions on what can ever be known.

**The Quantum Thermodynamic Revolution**

Combining theories of quantum information with the science of heat and energy transfer could lead to new technologies.

**Face Off: Building a Toy Universe to Pit Quantum Theory Against Gravity**

Using superconducting circuits to create a curved-spacetime analog with stronger gravity than our cosmos.

RECENT ARTICLES

Is quantum theory or relativity right about the nature of time? Bouncing radar beams off the moons of Jupiter just might help sort things out.

Using tiny mechanical devices to create accelerations equivalent to 100 million times the Earth’s gravitational field—mimicking the arena of quantum gravity in the lab.

The fuzziness of the quantum realm could arise from mathematical restrictions on what can ever be known.

Combining theories of quantum information with the science of heat and energy transfer could lead to new technologies.

Using superconducting circuits to create a curved-spacetime analog with stronger gravity than our cosmos.

PODCAST

September 3, 2015

Complete Podcast

The FQXi **April 30, 2012** Podcast features:

- Splitting the Electron
- Neural Relativity
- Table-Top Tests for Quantum Gravity

INFO: **MP3 file / 30 minutes / 29 MB**

LISTEN:

Featured video in this podcast:

Individual Stories

Splitting the Electron

Physicists break fundamental particle into two quasiparticles

INFO: **MP3 file / 6 minutes / 6 MB**

LISTEN:

RELATED LINKS:

*Nature:*Schlappa et al paper*Nature:*Not-quite-so elementary, my dear electron

Neural Relativity

How the brain perceives time -- and how to fool it.

INFO: **MP3 file / 10 minutes / 10 MB**

LISTEN:

RELATED LINKS:

*FQXi blog:*Video: Biologists and physicists discuss the nature of time*FQXi video:*David Eagleman on time and the brain

Table-Top Tests for Quantum Gravity

Probing the Planck scale with current quantum optical technology

INFO: **MP3 file / 8 minutes / 8 MB**

LISTEN:

RELATED LINKS:

*Nature Physics:*Pikovski et al paper*Backreaction blog:*Sabine Hossenfelder's critique

PODCAST ARCHIVE

- Hawking Claims to Solve Black Hole Paradox & Spookiness Confirmed in a Loophole-free Test
- Einstein Causes Quantum Collapse?
- Saving the World in 5 Simple Steps
- Quantum Thermodynamics
- The Physics Filmmaker

- Planets & Pentaquarks
- Frank Drake on a $100 million Alien Hunt
- Conjuring a Neutron Star from a Nanowire
- Edge of the Sky

- Talking About How to Talk About Physics

- In Praise of Physics Poetry
- Spacetime Squids
- Searching for the Impossible

- Bohmian Rhapsody

- Collapsing Physics

- Quantum Reality Check
- Detecting Black Hole Firewalls
- Quantum Networks

- 2014 Countdown Part 3 & Essay Contest Tips

- 2014 Countdown Part 2 & Request for Large Grant Proposals

- 2014 Countdown Part 1 & Video Contest Results

- When Parallel Worlds Interact with Ours
- Predicting the Future
- Quantum Identity Crisis
- Sounds from a Comet

- BICEP2 v Planck v Inflation theory
- One Past, Two Futures: A Gravitational Origin for the Arrow of Time
- Physics of Cancer
- Paul Davies on Cancer, Uncut

- Watching Quantum Cats Die
- Black Hole Fireworks
- Quantifying Occam
- Quantum Pigeonhole Principle
- Quantum Cheshire Cat

- Time Travel Simulated in the Lab
- BICEP2 Under Scrutiny
- Higgs the Destroyer
- Why is Nature Quantum?

- BICEP2 & Inflation
- BICEP2 & Alternative models
- Thermal Gravity
- Entangling Spacetime

- A Matter of Consciousness

- Sean Carroll Fluctuates on Floating Consciousnesses

- What is quantum information *really* good for? -- FQXi Conference Panel Discussion

- The Year in Physics: 2013 Review Part III
- Ancient Aliens

- The Year in Physics: 2013 Review Part II
- Taking the LHC to Africa

- The Year in Physics: 2013 Review Part I
- Alien Hunter

- Bye Bye Big Bang?
- Dark Energy Survey Launches
- Voyager 1 Leaves the Solar System
- Quantum Space Tests
- Superposition

- Experimental Proof for Parallel Universes?
- Multiversality -- Full Interview with Frank Wilczek
- Neutrinos Shift Personality
- Certainty About the Uncertainty Principle
- Plants Do Math!

- Cloaking Time
- The Reality of Time
- Bye Bye Black Hole Singularities!
- Entangling the Dead

View All Archived Podcasts

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CASLAV BRUKNER wrote on June 25, 2012

Table-Top Test of Quantum Gravity: Response to Sabine Hossenfelder's Critique

In response to the critique of Sabine Hossenfelder I would like to make the following comments that hopefully clarify the motivation and the analysis behind our paper.

1) It is incorrect that we assume that the centre of mass degree of freedom is given as a linear (or any other) sum of momenta of individual constituents. We do not need to make any such assumption. The centre of mass degree of freedom of...

Table-Top Test of Quantum Gravity: Response to Sabine Hossenfelder's Critique

In response to the critique of Sabine Hossenfelder I would like to make the following comments that hopefully clarify the motivation and the analysis behind our paper.

1) It is incorrect that we assume that the centre of mass degree of freedom is given as a linear (or any other) sum of momenta of individual constituents. We do not need to make any such assumption. The centre of mass degree of freedom of...

THE FQXI EDITORS wrote on April 30, 2012

This is a discussion of the FQXi Podcast from**April 30, 2012**

This is a discussion of the FQXi Podcast from

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