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Matrix Product States for Lattice Gauge Theories
Matrix Product States for Lattice Gauge Theories

... which is based on gauge theories is presently the best description of three of the four fundamental forces: the electromagnetic force, the strong force and the weak force. Within the framework of the Standard Model, forces between elementary particles are mediated by gauge fields corresponding to a ...
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... approximations for which these variables can be introduced. Particularly many approximations are obtained for the limit of small oscillations about an equilibrium or a periodic orbit. If the frequencies of oscillations are incommensurate, i.e., in the absence of resonances, such oscillators can be d ...
Chapter 2 Rydberg Atoms
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... Even stranger is the fact that when we actually look at the output of the quantum gate, then this in-between value will “collapse” into either |0⟩ or |1⟩. This will be explained in detail below. An example may help. Let’s think of a quantum computer built using atoms. An atom can exist, e.g., in two ...
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... Even stranger is the fact that when we actually look at the output of the quantum gate, then this in-between value will “collapse” into either |0⟩ or |1⟩. This will be explained in detail below. An example may help. Let’s think of a quantum computer built using atoms. An atom can exist, e.g., in two ...
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... field at a later time, it is therefore not necessary to know the form of the velocity field at all times, but only at t = 0. The null condition which ensures the existence of such a propagation by deformation: E·B = 0 is also satisfied by plane waves, but is not satisfied in general by electromagnet ...
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Creation of entangled states in coupled quantum dots via adiabatic... C. Creatore, R. T. Brierley, R. T. Phillips,

... ARP, then, allows a pulse to be constructed that transfers these pairs into their entangled excited states, without exciting the others. Thus, as shown in Fig. 3, the entanglement of formation per excitation could be very close to one, even within a strongly disordered ensemble. Our approach represe ...
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Testing Quantum Superposition Principle in Frequency Domain

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1AMQ, Part II Quantum Mechanics
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... Moving charges are currents and hence create magn. fields. Thus, there are internal B- fields in atoms. Electrons in atoms can have two spin orientations in such a field, namely ms=+-1/2….and hence two different energies. (note this energy splitting is small ~10-5 eV in H). We can estimate the split ...
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Quantum computing Markus Kiili Opinnäytetyö

... how much resources are needed to perform the calculation with the best known algorithm. Although energy and memory needed are also resources, the most important resource used in classifying computational problems is how much time it takes to reach the solution. Time taken is proportional to the numb ...
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Electric Field - Cloudfront.net

... Example #11: A small 2.00-g plastic ball is suspended by a 20.0-cmlong string in a uniform electric field, as shown in the figure below. If the ball is in equilibrium when the string makes a 15.0° angle with the vertical as indicated, what is the net charge on the ball? balance the forces by compon ...
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Quantum control of a Landau-quantized two

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Long-range Rydberg-Rydberg interactions in calcium, strontium and

... Preliminary calculations of the interactions for strontium revealed interesting features that differ from the alkali metals, such as the possibility of an isotropic, attractive interaction potential [20]. The goal of this work ...
Quantum noise properties of multiphoton transitions in driven nonlinear resonators
Quantum noise properties of multiphoton transitions in driven nonlinear resonators

... also nanomechanical devices which have been successfully realized in the deep quantum regime only recently [9–11]. In addition, quantum transport devices on the basis of molecular junctions have been realized where the interplay of charge transport and vibrational properties of the molecular bridge ...
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Paper 25 - Free-Energy Devices
Paper 25 - Free-Energy Devices

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History of quantum field theory

In particle physics, the history of quantum field theory starts with its creation by Paul Dirac, when he attempted to quantize the electromagnetic field in the late 1920s. Major advances in the theory were made in the 1950s, and led to the introduction of quantum electrodynamics (QED). QED was so successful and ""natural"" that efforts were made to use the same basic concepts for the other forces of nature. These efforts were successful in the application of gauge theory to the strong nuclear force and weak nuclear force, producing the modern standard model of particle physics. Efforts to describe gravity using the same techniques have, to date, failed. The study of quantum field theory is alive and flourishing, as are applications of this method to many physical problems. It remains one of the most vital areas of theoretical physics today, providing a common language to many branches of physics.
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