Is Quantum Field the Fundamental Structure of the Universe?

Click For Summary
SUMMARY

The discussion centers on whether Quantum Field (QF) theory is the fundamental structure of the universe or if there exists a deeper underlying framework. Graham raises a question about the current iterations of QF theory, specifically inquiring if it is considered the ultimate state of the universe. A response highlights that string theory posits QF theory as an effective theory, suggesting that it corresponds to a low-energy approximation of string theory, indicating a more profound structure beneath QF theory.

PREREQUISITES
  • Understanding of Quantum Field Theory (QFT)
  • Familiarity with String Theory concepts
  • Basic knowledge of high-energy physics
  • Awareness of theoretical physics frameworks
NEXT STEPS
  • Research the implications of String Theory on Quantum Field Theory
  • Explore the differences between low-energy and high-energy approximations in physics
  • Study the foundational principles of Quantum Field Theory
  • Investigate alternative theories to Quantum Field Theory in modern physics
USEFUL FOR

Physicists, students of theoretical physics, and anyone interested in the foundational structures of the universe and the relationship between Quantum Field Theory and String Theory.

grahamc
Messages
27
Reaction score
0
Hi all. I'm running a thread in the Philosophy section about rules of the universe etc but I'm stuck on a fundamental question which probably only a current quantum mechanics expert can answer.

In essence do the most current iterations of QF theory maintain that the ultimate and irreducible state of the universe is the Quantum Field or is there anything to suggest that that is a deeper structure beneath it?

Many thanks in anticipation,

Graham
 
Physics news on Phys.org
According to string theory, quantum field theory is merely an effective theory corresponding to the low-energy approximation of string theory.
 

Thread 'Two equivalent statements of time reversal symmetric Hamiltonian'

Time reversal invariant Hamiltonians must satisfy ##[H,\Theta]=0## where ##\Theta## is time reversal operator. However, in some texts (for example see Many-body Quantum Theory in Condensed Matter Physics an introduction, HENRIK BRUUS and KARSTEN FLENSBERG, Corrected version: 14 January 2016, section 7.1.4) the time reversal invariant condition is introduced as ##H=H^*##. How these two conditions are identical?
View full post »

Similar threads

Graduate Measurement in QFT: Mapping Fields to Theory's Math Formalism
  • · Replies 31 ·
2
Replies
31
Views
3K
Graduate Structure of Matter in Quantum Field Theory
  • · Replies 75 ·
3
Replies
75
Views
10K
Undergrad Confusion about Scattering in Quantum Electrodynamics
  • · Replies 134 ·
5
Replies
134
Views
11K
Undergrad How Do Quantum Field Theory and Quantum Loop Gravity Explain the Quantum World?
  • · Replies 1 ·
Replies
1
Views
2K
Undergrad String theory vs Quantum field theory
  • · Replies 1 ·
Replies
1
Views
3K
Graduate Is renormalization the ideal solution?
  • · Replies 57 ·
2
Replies
57
Views
7K
Undergrad Is the Quantum State Holographic?
  • · Replies 7 ·
Replies
7
Views
2K
Graduate The Quantum State as a Function of The Quantum Field
  • · Replies 13 ·
Replies
13
Views
3K
Undergrad Black Hole Singularity: Discussing Quantum Theories
  • · Replies 11 ·
Replies
11
Views
3K
Graduate Quantum Field Theory - Why quantise fields?
  • · Replies 13 ·
Replies
13
Views
4K