Inequivalent Leggett-Garg inequalities. (1st August 2017)
- Record Type:
- Journal Article
- Title:
- Inequivalent Leggett-Garg inequalities. (1st August 2017)
- Main Title:
- Inequivalent Leggett-Garg inequalities
- Authors:
- Kumari, Swati
Pan, A. K. - Abstract:
- Abstract: It remains an open question how a realist view of the macroscopic world emerges from a quantum formalism. For testing the macrorealism in the quantum domain, an interesting approach was put forward by Leggett and Garg in 1985, by formulating a suitable inequality valid for any macrorealistic theory. Recently, by following the Wigner idea of local realist inequality, a probabilistic version of standard Leggett-Garg inequalities has also been proposed. While the Wigner form of local realist inequalities is equivalent to the two-party, two-measurements and two-outcomes CHSH inequalities, in this paper we provide a generic proof to demonstrate that the Wigner form of Leggett-Garg inequalities is not only inequivalent to the standard ones, but also stronger than the latter. This is demonstrated by quantifying the amount of disturbance caused by a priori measurement to the subsequent measurements. In this connection, the relation between LGIs and another formulation of macrorealism known as no-signaling in time is examined.
- Is Part Of:
- Europhysics letters. Volume 118:Number 5(2017:Jun.)
- Journal:
- Europhysics letters
- Issue:
- Volume 118:Number 5(2017:Jun.)
- Issue Display:
- Volume 118, Issue 5 (2017)
- Year:
- 2017
- Volume:
- 118
- Issue:
- 5
- Issue Sort Value:
- 2017-0118-0005-0000
- Page Start:
- Page End:
- Publication Date:
- 2017-08-01
- Subjects:
- 03.65.Ta -- 03.67.-a
Physics -- Periodicals
Electronic journals
530.05 - Journal URLs:
- http://epljournal.edpsciences.org ↗
http://iopscience.iop.org/0295-5075 ↗
http://www.iop.org/ ↗
http://www.edpsciences.com/euro ↗ - DOI:
- 10.1209/0295-5075/118/50002 ↗
- Languages:
- English
- ISSNs:
- 0295-5075
- Deposit Type:
- Legaldeposit
- View Content:
- Available online (eLD content is only available in our Reading Rooms) ↗
- Physical Locations:
- British Library DSC - BLDSS-3PM
British Library STI - ELD Digital store - Ingest File:
- 11485.xml