Einstein-podolsky-rosen effect, Physics

Assignment Help:

Einstein-Podolsky-Rosen effect; EPR effect:

Assume the following quantum mechanical thought-experiment: Take a particle that is at rest and contain spin zero. It decays spontaneously in two fermions (spin 1/2 particles), which stream away into opposite directions at high speed. Because of the law of conservation of spin, we know that one is a spin +1/2 and the other is -1/2. Which one is which? According to quantum mechanics, neither takes on a specific state till it is observed (the wavefunction is collapsed).

The EPR effect revel that if one of the particles is detected, and then its spin is measured, then the other particle no matter where this is in the Universe immediately is forced to select as well and take on the role of the other particle. This demonstrated that certain kinds of quantum information instantaneously travel; not everything is restricted by the speed of light.

But, it can be demonstrated easily that this effect does not make faster-than-light communication or travel possible.


Related Discussions:- Einstein-podolsky-rosen effect

Explain about the dispersion in optical fibres, Explain about the dispersio...

Explain about the dispersion in optical fibres. Dispersion in optical fibres: Into optical fibers, temporal distribution of optical pulses because of dispersion will lead to

Expermient of a metal ring stand and rings, A metal ring stand and rings ...

A metal ring stand and rings A useful ring stand and rings can be made from a flat curtain rod and the fixtures which clamp over electric bulbs to hold lamp shades. These are u

Calculate the number of compton interactions per second, Suppose that we ha...

Suppose that we have a monochromatic non-diverging beam of x rays    that are incident on a slab of Pb. Inside the Pb plate there are three apertures (openings) that allow the beam

Determine the weight of the car , A car of mass 1.35 x 10 3 kg sits on a l...

A car of mass 1.35 x 10 3 kg sits on a large piston that has a surface area of 1.23 m 2 . The large piston is linked to a small piston of area 144 cm 2 . What is the weight

Estimate the heat capacity and constant volume, The molar heat capacity of ...

The molar heat capacity of a gas at constant pressure is 18.7 J mol -1 K -1 .    What is the heat capacity of 9.4  moles of this gas at constant volume ?

A cubical block of wood weighing, A cubical block of wood weighing 200g has...

A cubical block of wood weighing 200g has a lead piece fastened underneath. Find the mass of the lead piece which will just allow the block to float in water. Exact gravity of wood

Cosmological constant, Cosmological constant; Lambda The constant intr...

Cosmological constant; Lambda The constant introduced towards the Einstein field equation, planned to admit static cosmological solutions. During current philosophical view wa

Who are the best fiber optics manufacture, Who are the best fiber optics ma...

Who are the best fiber optics manufacture? To single out a company would be grossly unfair since in such business the players are, usually, respected industrial corporations wi

Electron distribution, Electron distribution: The atoms of a solid have...

Electron distribution: The atoms of a solid have electrons rotating in orbits around the positive nucleus. This is true of gases and liquids as well. These orbiting electrons

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd