Слайд 1 - I C R A
... integral without asymptotic boundary conditions? What will be a role of gauge degrees of freedom, which were traditionally considered as redundant, in this new approach? ...
... integral without asymptotic boundary conditions? What will be a role of gauge degrees of freedom, which were traditionally considered as redundant, in this new approach? ...
Anharmonic Oscillator
... Introduction and the simple harmonic oscillator In this notebook we study some problems in quantum mechanics using matrix methods. We know that we can solve quantum mechanics in any complete set of basis functions. If we choose a particular basis, the Hamiltonian will not, in general, be diagonal, ...
... Introduction and the simple harmonic oscillator In this notebook we study some problems in quantum mechanics using matrix methods. We know that we can solve quantum mechanics in any complete set of basis functions. If we choose a particular basis, the Hamiltonian will not, in general, be diagonal, ...
H. Lee
... An interesting fact: all insulators with fractional filling factor break some kind of symmetry hence exhibit some kind of order. ...
... An interesting fact: all insulators with fractional filling factor break some kind of symmetry hence exhibit some kind of order. ...
Projective Measurements
... Measurement operators and the 3rd Postulate in case of projective measurements • Set of two orthogonal states • To find ...
... Measurement operators and the 3rd Postulate in case of projective measurements • Set of two orthogonal states • To find ...
Quantum rotor and identical bands in deformed nuclei
... can be applied in this case by assigning S = O to the superdeformed band in 192Hg, S = O to superdeformed band (1) in 19411g,and 5 = 1 to superdeformed bands (2) and (3) in 19411g.The non-zero pseudo-spin is then associated with neutro n alignment and different 5 values have the possibility of disti ...
... can be applied in this case by assigning S = O to the superdeformed band in 192Hg, S = O to superdeformed band (1) in 19411g,and 5 = 1 to superdeformed bands (2) and (3) in 19411g.The non-zero pseudo-spin is then associated with neutro n alignment and different 5 values have the possibility of disti ...
PDF only - at www.arxiv.org.
... Even more striking is the fact that all WMs equally agree with the past and future strong measurements. While it is not surprising that the noon WMs confirm the morning strong outcomes, the equal degree of agreement with the evening ones can suggest that they anticipate them. There is, of course, al ...
... Even more striking is the fact that all WMs equally agree with the past and future strong measurements. While it is not surprising that the noon WMs confirm the morning strong outcomes, the equal degree of agreement with the evening ones can suggest that they anticipate them. There is, of course, al ...
A New Model of Shiatsu Energy
... I was, sitting next to him in a vast room surrounded by the largest expanse of Shiatsu students that I had ever seen. ...
... I was, sitting next to him in a vast room surrounded by the largest expanse of Shiatsu students that I had ever seen. ...
Quantum key distribution
Quantum key distribution (QKD) uses quantum mechanics to guarantee secure communication. It enables two parties to produce a shared random secret key known only to them, which can then be used to encrypt and decrypt messages. It is often incorrectly called quantum cryptography, as it is the most well known example of the group of quantum cryptographic tasks.An important and unique property of quantum key distribution is the ability of the two communicating users to detect the presence of any third party trying to gain knowledge of the key. This results from a fundamental aspect of quantum mechanics: the process of measuring a quantum system in general disturbs the system. A third party trying to eavesdrop on the key must in some way measure it, thus introducing detectable anomalies. By using quantum superpositions or quantum entanglement and transmitting information in quantum states, a communication system can be implemented which detects eavesdropping. If the level of eavesdropping is below a certain threshold, a key can be produced that is guaranteed to be secure (i.e. the eavesdropper has no information about it), otherwise no secure key is possible and communication is aborted.The security of encryption that uses quantum key distribution relies on the foundations of quantum mechanics, in contrast to traditional public key cryptography which relies on the computational difficulty of certain mathematical functions, and cannot provide any indication of eavesdropping at any point in the communication process, or any mathematical proof as to the actual complexity of reversing the one-way functions used. QKD has provable security based on information theory, and forward secrecy.Quantum key distribution is only used to produce and distribute a key, not to transmit any message data. This key can then be used with any chosen encryption algorithm to encrypt (and decrypt) a message, which can then be transmitted over a standard communication channel. The algorithm most commonly associated with QKD is the one-time pad, as it is provably secure when used with a secret, random key. In real world situations, it is often also used with encryption using symmetric key algorithms like the Advanced Encryption Standard algorithm. In the case of QKD this comparison is based on the assumption of perfect single-photon sources and detectors, that cannot be easily implemented.