1D QED on a lattice, how much information?

In summary, to simulate 1D QED on a 1D lattice, information is needed at each lattice site regarding the mass, charge, and spin of the particles. The links between lattice sites represent the gauge field and can be used to calculate the scattering or annihilation of oppositely charged particles. The lattice can also accommodate any number of particles. However, theoretical physicists have turned to large-scale computation to numerically solve QCD on a lattice, using Monte Carlo methods to evaluate the integral over gluon fields and approximate the exact path integral with controlled errors.
  • #1
Spinnor
Gold Member
2,226
431
Suppose we were to simulate 1D QED on a 1D lattice. How much information do we need at each lattice site given the mass, charge, and spin of the particles (does spin make sense in 1-1D spacetime?)?

The links between lattice sites represent the gauge field? How much information is needed at each link?

I'm guessing this lattice could be used to calculate whether oppositely charged particles moving towards each other with momentum p1 and p2, scattered or annihilated in one space dimension?

Do we have "braking radiation" or Bremsstrahlung in 1DEdit, do we need a lattice of both time and space?

Can the lattice accommodate any number of particles?

Thanks for any help!
 
Last edited:
Physics news on Phys.org
  • #2
Start here,

http://www.scidacreview.org/0702/html/qcd.html

From there,

QCD on the Lattice
The good news is that QCD has been studied quantitatively in high energy collisions where the interactions are weak, providing overwhelming evidence for its validity. The bad news is that at the large distances and low energies governing the binding and structure of hadrons, the interactions become so strong and nonlinear that, unlike the case of QED, no known analytical technique can quantitatively describe them. Theoretical physicists have turned to large-scale computation to solve QCD numerically in order to unlock the secrets of the strong interaction. The inspiration and techniques come from Feynman’s path integral formulation of field theory that sums over all possible time histories contributing to a process, with appropriate weighting. To implement this idea in a practical calculation, scientists replace the space-time continuum with a discrete lattice in space and time that possesses a finite lattice spacing, a, and a finite volume. Quark fields are defined on the sites of the lattice, and the gluon fields are defined on the links connecting lattice sites. A discrete action is written for this lattice with the property that it approaches the QCD action in the limit as a goes to zero. The integral over the gluon fields is evaluated by Monte Carlo methods, so that as the number of time histories, N, sampled with a weight given by the discrete QCD action increases, the exact path integral is approximated with controlled errors that decrease as the reciprocal of √N.
 
Last edited by a moderator:

Related to 1D QED on a lattice, how much information?

1. What is 1D QED on a lattice?

1D QED on a lattice is a theoretical model in physics that studies the behavior of quantum electrodynamics (QED) in one-dimensional space. It involves representing particles and their interactions on a grid-like structure, known as a lattice.

2. How is information measured in 1D QED on a lattice?

Information in 1D QED on a lattice is typically measured using the von Neumann entropy, which quantifies the amount of information contained in a quantum system. It can also be measured through the correlation functions of the particles on the lattice.

3. What can 1D QED on a lattice tell us about real-world physics?

While 1D QED on a lattice is a simplified model, it can provide insights into the behavior of quantum systems and their interactions. It can also be used to study phase transitions, which are important in understanding the behavior of matter in the real world.

4. What are the limitations of 1D QED on a lattice?

One limitation of 1D QED on a lattice is that it does not fully capture the complexity of real-world systems. It also assumes that the particles and their interactions are confined to a one-dimensional space, which may not always be the case. Additionally, the calculations involved can be computationally intensive.

5. Are there any practical applications of 1D QED on a lattice?

While 1D QED on a lattice is primarily used for theoretical studies, it has potential applications in quantum computing and quantum information processing. It can also be used to study condensed matter systems and their behavior under different conditions.

Similar threads

  • Advanced Physics Homework Help
Replies
1
Views
860
Replies
8
Views
797
  • High Energy, Nuclear, Particle Physics
Replies
3
Views
4K
Replies
2
Views
665
  • High Energy, Nuclear, Particle Physics
Replies
1
Views
1K
  • Quantum Physics
Replies
10
Views
659
  • High Energy, Nuclear, Particle Physics
Replies
1
Views
2K
Replies
3
Views
946
  • Special and General Relativity
5
Replies
144
Views
6K
  • General Discussion
Replies
2
Views
408
Back
Top