expectation value


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expectation value

[‚ek‚spek′tā·shən ‚val·yü]
(quantum mechanics)
The average of the results of a large number of measurements of a quantity made on a system in a given state; in case the measurement disturbs the state, the state is reprepared before each measurement.
References in periodicals archive ?
Both these variances, however, lie even below their theoretical chance expectation values.
Actually these values compose an extremely interesting data set to analyze, since the expectation values can be calculated by quantum mechanics from exact analytical wave functions and do not have any measurement error (errors in physical constants such as a0 and h can be neglected).
D and F have the theoretical expectation value of 10,000/2 = 5,000, and the theoretical variance of 10,000/4 = 2,500, with |Sigma~ = 50.
The expectation values of the Casimir operators equations (2-7) in the ground state equation (14) is:
L] X U(1) invariant interactions, where v is the vacuum expectation value of the SM Higgs boson and [LAMBDA] is the compositness scale.
denote the (normalized) expectation value of the operator A with respect to f [member of] D(A), and
A corresponding bunching measure is defined, and an expectation value and variance for this measure are calculated.
Land expectation value (LEV) is simply the value of a tract of land used for growing timber.
The taxable amount consists of the sum of: the intrinsic value of the options (the spread between the exercise price and the fair market value of the underlying shares) and the so-called expectation value of the stock option.

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