Employing the Lanczos algorithm in combination with a kernel polynomial moment expansion (KPM) and the maximum entropy method (MEM), we show a way of calculating charge and spin excitations in the Holstein t–J model, including the full quantum nature of phonons. To analyze polaron band formation we evaluate the hole spectral function for a wide range of electron–phonon coupling strengths. For t...

We derive the Holstein-Primakoff oscillator realization on the coadjoint orbits of the SU(N + 1) and SU(1, N) group by treating the coadjoint orbits as a constrained system and performing the symplectic reduction. By using the action-angle variables transformations, we transform the original variables into Darboux variables. The Holstein-Primakoff expressions emerge after quantization in a cano...

Eighteen Postpartum Holstein Friesian (HF) crossbred cows aged between 2nd and 5th lactations were selected and randomly divided into 2 experimental groups viz., group I and II (control). On day 2 Postpartum group I and II cows were treated with an intramuscular injection of 5 mg methyl ergometrine maleate and 5 ml normal saline, respectively. The cervical involution progressed rapidly and on d...

This study was conducted at Sarsha Upazila in Jessore district of Bangladesh to capture a scenario of productive and reproductive performances of different genotypes such as Holstein-Friesian cross, Sahiwal cross, Sindhi cross with local, and indigenous dairy cows. Data were collected by live survey on 100 cows, divided into 4 groups each consists of 25 animals. Results shows that age at first ...

We propose the implementation of the Holstein model by means of digital methods in a linear chain of trapped ions. We show how the simulation fidelity scales with the generation of phononic excitations. We propose a decomposition and a stepwise trapped-ion implementation of the Holstein Hamiltonian. Via numerical simulations, we study how the protocol is affected by realistic gates. Finally, we...

In classical fixed point and coincidence theory the notion of Nielsen numbers has proved to be extremely fruitful. We extend it to pairs (f1, f2) of maps between manifolds of arbitrary dimensions, using nonstabilized normal bordism theory as our main tool. This leads to estimates of the minimum numbers MCC(f1, f2) (and MC(f1, f2), resp.) of pathcomponents (and of points, resp.) in the coinciden...

This study examined the contribution of F1 and F2 alone on the perception of plosive consonants in a CV context. Applying a 3-Bark spectral integration the F2 frequency was corrected for effects of proximity either to F1 or to F3, i.e., was replaced by F2’. Subjects used a two-dimensional Method of Adjustment to select the F1 and F2 consonant onset frequencies that led to a subjectively optimal...