Nevertheless there are quite a number of experimental collaborations around.
Lighting through a wall experiment.
Several different calculational methods are employed and compared and in all cases we retain a nonzero axion mass.
In modern physics the double slit experiment is a demonstration that light and matter can display characteristics of both classically defined waves and particles.
This type of experiment was first performed using light by thomas young in 1801 as a demonstration of the wave behavior of light.
Recently axionlike particle search has received renewed interest.
The alps collaboration runs a light shining through a wall lsw experiment to search for photon oscillations into weakly interacting sub ev particles wisps inside of a superconducting hera dipole magnet at the site of desy.
We present here the 2sigma limits obtained so far with our novel setup consisting of a pulsed magnetic field and a pulsed laser.
Unfortunately with present and near future technologies the opportunity to observe light shining through walls via these effects is completely out of question.
Light shining through a wall setup.
The wavy line indicates the photon field and the dashed line the axion field.
In this paper we have described and characterized our apparatus and demonstrated the data analysis procedures.
However very feeble gravitational and electroweak effects allow for this exotic possibility.
To leading order we find that when the photon frequency ωis very close to the axion mass m there is a threshold cusp.
Shining light through walls.
In particular several groups have started light shining through a wall experiments based on magnetic field and laser both continuous which is very demanding in terms of detector background.
The analysis of light shining through a wall experiments.
An x ray version of this experiment has recently been proposed by rabadán et al.
At first glance this sounds crazy.
The experiment is to search for particles that can shine light through a wall.
And two recent optical laser lsw experiments have reported preliminary results.
Like the wimps the suspected particle does not belong to the standard model of particle physics nor is it clear that it actually exists.