Jove
Visualize
Contact Us
JoVE
x logofacebook logolinkedin logoyoutube logo
ABOUT JoVE
OverviewLeadershipBlogJoVE Help Center
AUTHORS
Publishing ProcessEditorial BoardScope & PoliciesPeer ReviewFAQSubmit
LIBRARIANS
TestimonialsSubscriptionsAccessResourcesLibrary Advisory BoardFAQ
RESEARCH
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchive
EDUCATION
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualFaculty Resource CenterFaculty Site
Terms & Conditions of Use
Privacy Policy
Policies

Related Concept Videos

Space-Time Curvature and the General Theory of Relativity01:17

Space-Time Curvature and the General Theory of Relativity

4.1K
In 1905, Albert Einstein published his special theory of relativity. According to this theory, no matter in the universe can attain a speed greater than the speed of light in a vacuum, which thus serves as the speed limit of the universe.
This has been verified in many experiments. However, space and time are no longer absolute. Two observers moving relative to one another do not agree on the length of objects or the passage of time. The mechanics of objects based on Newton's laws of...
4.1K
Schwarzschild Radius and Event Horizon01:21

Schwarzschild Radius and Event Horizon

2.6K
No object with a finite mass can travel faster than the speed of light in a vacuum. This fact has an interesting consequence in the domain of extremely high gravitational fields.
The minimum speed required to launch a projectile from the surface of an object to which it is gravitationally bound so that it eventually escapes the object’s gravitational field is called the escape velocity. The escape velocity is independent of the mass of the object. Merging the idea of escape...
2.6K
Limits with Oscillating Discontinuities01:19

Limits with Oscillating Discontinuities

308
An oscillating discontinuity is a type of discontinuity in which a function’s values fluctuate infinitely often as the input approaches a particular point. Unlike jump discontinuities, where the function suddenly shifts between two values, or infinite discontinuities, where the function diverges without bound, an oscillating discontinuity arises from rapid back-and-forth variation. Because the function never stabilizes toward a single value, no finite limit exists at that point.One of the...
308
Deflection of a Beam01:19

Deflection of a Beam

642
Accurately determining beam deflection and slope under various loading conditions in structural engineering is crucial for ensuring safety and structural integrity. Singularity functions offer a streamlined approach to analyzing beams, especially when multiple loading functions complicate the bending moment equation.
Singularity functions, described in an earlier lesson, are powerful mathematical tools that represent discontinuities within a function commonly encountered in structural loading...
642
Limits at Infinity01:24

Limits at Infinity

209
The function that decreases as the input becomes very large provides a clear example of how mathematical functions can behave at extreme values. When the input increases continuously, the output becomes smaller and smaller, getting closer to a particular fixed value. Although the output never actually reaches this value, it moves nearer to it without limit. This behavior is a fundamental concept in understanding how functions behave as the input grows indefinitely. The graphical representation...
209
Singularity Functions for Bending Moment01:18

Singularity Functions for Bending Moment

491
Singularity functions simplify the representation of bending moments in beams subjected to discontinuous loading, allowing the use of a single mathematical expression. For a supported beam AB, with uniform loading from its midpoint M to the right side end B, the approach involves conceptual 'cuts' at specific points to determine the bending moment in each segment. By cutting the beam at a point between A and M, the bending moment for the segment before reaching midpoint M is represented using a...
491

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by
Same author

Segmentation regularized training for multi-domain deep learning registration applied to magnetic resonance-guided prostate cancer radiotherapy.

Physics and imaging in radiation oncology·2026
Same author

One-Loop Renormalization of Cubic Gravity in Six Dimensions.

Physical review letters·2022
Same author

Finite Quantum Gravity Amplitudes: No Strings Attached.

Physical review letters·2020
Same author

Towards Reconstructing the Quantum Effective Action of Gravity.

Physical review letters·2018
Same author

Gravitational Two-Loop Counterterm Is Asymptotically Safe.

Physical review letters·2016
Same author

Asymptotic freedom in Hořava-Lifshitz gravity.

Physical review letters·2014

Related Experiment Video

Updated: Jan 6, 2026

Setting Limits on Supersymmetry Using Simplified Models
07:46

Setting Limits on Supersymmetry Using Simplified Models

Published on: November 15, 2013

8.9K

Resolving Spacetime Singularities within Asymptotic Safety.

Lando Bosma1, Benjamin Knorr1, Frank Saueressig1

  • 1Institute for Mathematics, Astrophysics and Particle Physics (IMAPP), Radboud University Nijmegen, Heyendaalseweg 135, 6525 AJ Nijmegen, Netherlands.

Physical Review Letters
|October 2, 2019
PubMed
Summary
This summary is machine-generated.

Quantum gravity research removes spacetime singularities. The quantum-corrected Newtonian potential approaches a constant negative value, resolving classical singularities in black holes and cosmology.

More Related Videos

Operation of the Collaborative Composite Manufacturing CCM System
10:09

Operation of the Collaborative Composite Manufacturing CCM System

Published on: October 1, 2019

7.0K
Spatiotemporal Mapping of Motility in Ex Vivo Preparations of the Intestines
12:00

Spatiotemporal Mapping of Motility in Ex Vivo Preparations of the Intestines

Published on: January 27, 2016

10.8K

Related Experiment Videos

Last Updated: Jan 6, 2026

Setting Limits on Supersymmetry Using Simplified Models
07:46

Setting Limits on Supersymmetry Using Simplified Models

Published on: November 15, 2013

8.9K
Operation of the Collaborative Composite Manufacturing CCM System
10:09

Operation of the Collaborative Composite Manufacturing CCM System

Published on: October 1, 2019

7.0K
Spatiotemporal Mapping of Motility in Ex Vivo Preparations of the Intestines
12:00

Spatiotemporal Mapping of Motility in Ex Vivo Preparations of the Intestines

Published on: January 27, 2016

10.8K

Area of Science:

  • Theoretical physics
  • Quantum gravity
  • Cosmology

Background:

  • Classical general relativity predicts spacetime singularities.
  • These singularities are points where the theory breaks down.
  • Quantum gravity aims to resolve these fundamental issues.

Purpose of the Study:

  • To investigate quantum corrections to the graviton propagator.
  • To compute the nonperturbative momentum dependence of a key structure function.
  • To determine if quantum effects can resolve spacetime singularities.

Main Methods:

  • Utilizing the gravitational asymptotic safety program.
  • Calculating quantum corrections to the graviton propagator.
  • Analyzing the momentum dependence of a specific structure function.

Main Results:

  • The quantum-corrected Newtonian potential was computed.
  • This potential approaches a constant negative value at zero distance.
  • This behavior effectively removes the classical singularity.

Conclusions:

  • The study demonstrates a mechanism for singularity removal via quantum gravity.
  • This mechanism is generic and likely applies to black hole and cosmic singularities.
  • Asymptotic safety provides a framework for a consistent theory of quantum gravity.