Fermionic nature of quantum gravity

In summary, the conversation is about a new paper discussing the possibility of fermionic fields in quantum gravity. The abstract presents a theory that can be quantized as fermions under exchange, similar to the Skyrme model of baryons. The question is raised whether geometry is bosonic or fermionic, and the conversation discusses the implications of this theory.
  • #1
Schreiberdk
93
0
In this new paper today http://arxiv.org/abs/1105.4184, is it considered whether quantum gravity actually has fermionic fields rather than just bosonic fields:

Abstract
It is generally assumed that the gravitational field is bosonic. Here we show
that a simple propagating torsional theory can give rise to localized geometric
structures that can consistently be quantized as fermions under exchange. To
demonstrate this, we show that the model can be formally mapped onto the
Skyrme model of baryons, and we use well-known results from Skyrme theory.
This begs the question: Is geometry bosonic or fermionic (or both)?

So what do you think? Does this change our view on quantum gravity radically?
 
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  • #2
Actually, I thought it said that gravity is still bosonic, but that one could get fermions from bosons (or rather fermions from geometry).

This reminds me of http://arxiv.org/abs/cond-mat/0407140 .
 
  • #3
I haven't studied these papers, but it reminds me to the well-known bosonization
 
  • #4

1. What is the fermionic nature of quantum gravity?

The fermionic nature of quantum gravity refers to the fact that, according to the Standard Model of particle physics, fermions (particles with half-integer spin, such as electrons and quarks) are the building blocks of matter and are affected by the gravitational force. This means that in order to fully understand the behavior of matter at a quantum level, we must also take into account the gravitational force, which is described by the theory of general relativity.

2. How does the fermionic nature of quantum gravity affect our understanding of the universe?

The fermionic nature of quantum gravity is crucial in understanding the fundamental interactions between particles and the large-scale structure of the universe. It helps us explain phenomena such as black holes, the expansion of the universe, and the formation of galaxies. Without considering the fermionic nature of quantum gravity, our understanding of the universe would be incomplete.

3. Are there any experimental evidence for the fermionic nature of quantum gravity?

Currently, there is no experimental evidence for the fermionic nature of quantum gravity, as it is a theoretical concept that has not yet been fully proven. However, scientists are working on experiments and observations that could potentially provide evidence for this concept, such as studying the behavior of particles in extreme conditions, such as near black holes.

4. Can the fermionic nature of quantum gravity be unified with other theories?

One of the biggest challenges in physics is unifying the theories of general relativity and quantum mechanics. The fermionic nature of quantum gravity is a key component in this quest for a unified theory, as it bridges the gap between these two theories. Many scientists are currently working on different approaches to unify these theories and incorporate the fermionic nature of quantum gravity.

5. How does the fermionic nature of quantum gravity relate to the search for a theory of everything?

The fermionic nature of quantum gravity is an essential piece of the puzzle in the search for a theory of everything, which aims to unify all the fundamental forces and particles of the universe into one cohesive framework. Understanding the fermionic nature of quantum gravity is crucial in this quest, as it helps us explain the behavior of matter at a fundamental level and sheds light on the underlying principles of the universe.

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