Related Experiment Video
Updated: Aug 5, 2026
07:34
Perceptual and Category Processing of the Uncanny Valley Hypothesis' Dimension of Human Likeness: Some Methodological Issues
Published on: June 3, 2013
Hidden Sector Custodial Naturalness
Thede de Boer1, Manfred Lindner1, Andreas Trautner2
1Max-Planck-Institut für Kernphysik, Saupfercheckweg 1, 69117 Heidelberg, Germany.
Physical Review Letters
|July 31, 2026
Summary
This study introduces a new model for custodial naturalness, addressing the Standard Model
Area of Science:
- Theoretical Physics
- High Energy Physics
- Cosmology
Background:
- The Standard Model (SM) faces the electroweak hierarchy problem.
- Custodial naturalness offers a potential solution by combining symmetries.
- Existing models often require extensions to the SM gauge group.
Purpose of the Study:
- To propose a new, minimal model realizing custodial naturalness.
- To achieve this without extending the SM gauge group.
- To incorporate a dark matter candidate within the model.
Main Methods:
- Introduced a new scalar singlet field.
- Reduced custodial symmetry to SO(5).
- Investigated dark matter production via freeze-in.
- Explored quantum critical generation of the electroweak scale.
Main Results:
- A minimal model for custodial naturalness is presented.
- The model requires no extension of the SM gauge group.
- A scalar singlet naturally acts as a dark matter candidate.
- Electroweak scale generation is achieved via quantum criticality.
Conclusions:
- The proposed model offers a viable path to custodial naturalness.
- It successfully integrates dark matter and neutrino mass generation.
- The UV completion scale is found to be around 10^11 GeV, potentially up to the Planck scale.
Related Concept Videos
02:30Naturalistic Observations
If you want to understand how behavior occurs, one of the best ways to gain information is to simply observe the behavior in its natural context. However, people might change their behavior in unexpected ways if they know they are being observed. How do researchers obtain accurate information when people tend to hide their natural behavior? As an example, imagine that your professor asks everyone in your class to raise their hand if they always wash their hands after using the restroom. Chances...
01:09Censoring Survival Data
Survival analysis is a statistical method used to analyze time-to-event data, often employed in fields such as medicine, engineering, and social sciences. One of the key challenges in survival analysis is dealing with incomplete data, a phenomenon known as "censoring." Censoring occurs when the event of interest (such as death, relapse, or system failure) has not occurred for some individuals by the end of the study period or is otherwise unobservable, and it might have many different reasons...
01:24Natural and Artificial Concepts
In psychology, concepts can be divided into two categories: natural and artificial. Natural concepts are formed through direct or indirect experiences. For example, consider the concept of snow. If you live in a place with regular snowfall, such as Essex Junction, Vermont, you know snow through direct experiences. You’ve seen it fall, touched it, shoveled it, and played in it. You recognize its texture, appearance, and even its smell. In contrast, if you live on an island like Saint Vincent in...
01:29Non-nuclear Inheritance
Most DNA resides in the nucleus of a cell. However, some organelles in the cell cytoplasm—such as chloroplasts and mitochondria—also have their own DNA. These organelles replicate their DNA independently of the nuclear DNA of the cell in which they reside. Non-nuclear inheritance describes the inheritance of genes from structures other than the nucleus.
01:29Non-nuclear Inheritance
Most DNA resides in the nucleus of a cell. However, some organelles in the cell cytoplasm—such as chloroplasts and mitochondria—also have their own DNA. These organelles replicate their DNA independently of the nuclear DNA of the cell in which they reside. Non-nuclear inheritance describes the inheritance of genes from structures other than the nucleus.
01:12Hindsight Biases
Hindsight bias leads you to believe that the event you just experienced was predictable, even though it really wasn’t. In other words, you knew all along that things would turn out the way they did. Can you relate this to the phrase "Hindsight is 20/20" now?