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Abstract

We show how it is possible to use the plethystic program in order to compute baryonic generating functions that count BPS operators in the chiral ring of quiver gauge theories living on the world volume of D branes probing a non compact CY manifold. Special attention is given to the conifold theory and the orbifold C 2 Z 2 × C, where exact expressions for generating functions are given in detail. This paper solves a long standing problem for the combinatorics of quiver gauge theories with baryonic moduli spaces. It opens the way to a statistical analysis of quiver theories on baryonic branches. Surprisingly, the baryonic charge turns out to be the quantized Kähler modulus of the geometry.

Distance determination from dysprosium induced relaxation enhancement: a case study on membrane-inserted WALP23 polypeptides

“…Nanometer range distance constraints obtained from dipolar electron paramagnetic resonance (EPR) spectroscopy are broadly used in studies of structure and conformational changes of large biomolecules [1][2][3][4][5][6][7][8][9][10][11]. The distance measurements by EPR can supplement other methods, like NMR [12] or crystallography [13], or can be used as a stand-alone technique [14][15][16].…”

Theory of pulsed reaction yield detected magnetic resonance

“…The distance between the components of the doublet gives the D value, which is unambiguously related to the distance between the radical centers in the RP. 12,52,53 Finally, let us find an analogue of the stimulated echo sequence, which also allows one to obtain an ENDOR sequence after a slight modification. To obtain the stimulated echo we will follow ideas from conventional NMR and EPR.…”

“…In general, studies of the echo modulation can provide information about the distance between the radicals of the RP, which is now seen as one of the most important applications of EPR. 52,53 For obtaining such type of ESEEM in RYDMR it is necessary to modify the pulse sequence. We have found that two mw-pulses are not sufficient to obtain modulation caused by J, but at least three pulses are necessary.…”

Conformationally Unambiguous Spin Labeling for Distance Measurements

“…One key technique is the double electron-electron resonance (DEER) experiment that provides information on the distance between paramagnetic centers. [1,2] The most reliable structural information will be gained if this distance is unaffected by conformational flexibility of the spin label. 3-Ethy-A C H T U N G T R E N N U N G nyl-1-oxyl-2,2,5,5-tetramethylpyrroline is essentially a rigid spin label and has been used for studies on the flexibility of shape-persistent nanoscopic molecules including oligonucleotides.…”